79670740 has 48 divisors (see below), whose sum is σ = 171076752. Its totient is φ = 31159296.

The previous prime is 79670683. The next prime is 79670797. The reversal of 79670740 is 4707697.

It is a happy number.

79670740 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (79670683) and next prime (79670797).

It can be written as a sum of positive squares in 8 ways, for example, as 887364 + 78783376 = 942^2 + 8876^2 .

79670740 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 79670693 and 79670702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287482 + ... + 287758.

It is an arithmetic number, because the mean of its divisors is an integer number (3564099).

Almost surely, 2^79670740 is an apocalyptic number.

It is an amenable number.

79670740 is an abundant number, since it is smaller than the sum of its proper divisors (91406012).

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

79670740 is a wasteful number, since it uses less digits than its factorization.

79670740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 79670740 is about 8925.8467385453. The cubic root of 79670740 is about 430.2949841791.

The spelling of 79670740 in words is "seventy-nine million, six hundred seventy thousand, seven hundred forty".