70981036 has 48 divisors (see below), whose sum is σ = 155957760. Its totient is φ = 27561600.

The previous prime is 70980991. The next prime is 70981049. The reversal of 70981036 is 63018907.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 70980992 and 70981010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9336 + ... + 15136.

It is an arithmetic number, because the mean of its divisors is an integer number (3249120).

Almost surely, 2^70981036 is an apocalyptic number.

70981036 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70981036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77978880).

70981036 is an abundant number, since it is smaller than the sum of its proper divisors (84976724).

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

70981036 is a wasteful number, since it uses less digits than its factorization.

70981036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854 (or 5852 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 70981036 is about 8425.0243916561. The cubic root of 70981036 is about 414.0449047731.

The spelling of 70981036 in words is "seventy million, nine hundred eighty-one thousand, thirty-six".