70675640 has 96 divisors (see below), whose sum is σ = 187265520. Its totient is φ = 23933952.

The previous prime is 70675621. The next prime is 70675643. The reversal of 70675640 is 4657607.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 70675640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70675643) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 209552 + ... + 209888.

Almost surely, 2^70675640 is an apocalyptic number.

70675640 is a gapful number since it is divisible by the number (70) 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 70675640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93632760).

70675640 is an abundant number, since it is smaller than the sum of its proper divisors (116589880).

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

70675640 is a wasteful number, since it uses less digits than its factorization.

70675640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 70675640 is about 8406.8805153874. The cubic root of 70675640 is about 413.4502415285.

The spelling of 70675640 in words is "seventy million, six hundred seventy-five thousand, six hundred forty".