76440770 has 32 divisors (see below), whose sum is σ = 157828608. Its totient is φ = 26111808.

The previous prime is 76440757. The next prime is 76440797. The reversal of 76440770 is 7704467.

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 76440770.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18647 + ... + 22373.

It is an arithmetic number, because the mean of its divisors is an integer number (4932144).

Almost surely, 2^76440770 is an apocalyptic number.

76440770 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

76440770 is an abundant number, since it is smaller than the sum of its proper divisors (81387838).

76440770 is a wasteful number, since it uses less digits than its factorization.

76440770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 76440770 is about 8743.0412328892. The cubic root of 76440770 is about 424.3996506236.

The spelling of 76440770 in words is "seventy-six million, four hundred forty thousand, seven hundred seventy".