77696744 has 16 divisors (see below), whose sum is σ = 149619300. Its totient is φ = 37798272.

The previous prime is 77696693. The next prime is 77696761. The reversal of 77696744 is 44769677.

It can be written as a sum of positive squares in 2 ways, for example, as 73444900 + 4251844 = 8570^2 + 2062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77696692 and 77696701.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130949 + ... + 131540.

Almost surely, 2^77696744 is an apocalyptic number.

77696744 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

77696744 is a deficient number, since it is larger than the sum of its proper divisors (71922556).

77696744 is a wasteful number, since it uses less digits than its factorization.

77696744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262532 (or 262528 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 50.

The square root of 77696744 is about 8814.5756562639. The cubic root of 77696744 is about 426.7114270533.

The spelling of 77696744 in words is "seventy-seven million, six hundred ninety-six thousand, seven hundred forty-four".