79744770 has 64 divisors (see below), whose sum is σ = 243037440. Its totient is φ = 18226944.

The previous prime is 79744723. The next prime is 79744771. The reversal of 79744770 is 7744797.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79744771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19207 + ... + 22986.

It is an arithmetic number, because the mean of its divisors is an integer number (3797460).

Almost surely, 2^79744770 is an apocalyptic number.

79744770 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79744770 is an abundant number, since it is smaller than the sum of its proper divisors (163292670).

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

79744770 is a wasteful number, since it uses less digits than its factorization.

79744770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42216 (or 42210 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 79744770 is about 8929.9927211616. The cubic root of 79744770 is about 430.4282195270.

The spelling of 79744770 in words is "seventy-nine million, seven hundred forty-four thousand, seven hundred seventy".