76788770 has 16 divisors (see below), whose sum is σ = 138527928. Its totient is φ = 30647040.

The previous prime is 76788769. The next prime is 76788787. The reversal of 76788770 is 7788767.

It can be written as a sum of positive squares in 4 ways, for example, as 73942801 + 2845969 = 8599^2 + 1687^2 .

It is a super-2 number, since 2×76788770² = 11793030396225800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3719 + ... + 12938.

Almost surely, 2^76788770 is an apocalyptic number.

76788770 is a deficient number, since it is larger than the sum of its proper divisors (61739158).

76788770 is a wasteful number, since it uses less digits than its factorization.

76788770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17125.

The product of its (nonzero) digits is 921984, while the sum is 50.

The square root of 76788770 is about 8762.9201753753. The cubic root of 76788770 is about 425.0427085108.

The spelling of 76788770 in words is "seventy-six million, seven hundred eighty-eight thousand, seven hundred seventy".