70698240 has 324 divisors, whose sum is σ = 273346164. Its totient is φ = 16809984.

The previous prime is 70698239. The next prime is 70698241. The reversal of 70698240 is 4289607.

It is an interprime number because it is at equal distance from previous prime (70698239) and next prime (70698241).

It can be written as a sum of positive squares in 2 ways, for example, as 40755456 + 29942784 = 6384^2 + 5472^2 .

It is a super-2 number, since 2×70698240² = 9996482278195200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 70698195 and 70698204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70698241) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3720951 + ... + 3720969.

It is an arithmetic number, because the mean of its divisors is an integer number (843661).

Almost surely, 2^70698240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70698240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136673082).

70698240 is an abundant number, since it is smaller than the sum of its proper divisors (202647924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70698240 is a wasteful number, since it uses less digits than its factorization.

70698240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 70698240 is about 8408.2245450511. The cubic root of 70698240 is about 413.4943065918.

The spelling of 70698240 in words is "seventy million, six hundred ninety-eight thousand, two hundred forty".