77607044 has 12 divisors (see below), whose sum is σ = 137015004. Its totient is φ = 38459904.

The previous prime is 77607041. The next prime is 77607059. The reversal of 77607044 is 44070677.

It can be written as a sum of positive squares in 2 ways, for example, as 5152900 + 72454144 = 2270^2 + 8512^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77606995 and 77607013.

It is not an unprimeable number, because it can be changed into a prime (77607041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85397 + ... + 86300.

It is an arithmetic number, because the mean of its divisors is an integer number (11417917).

Almost surely, 2^77607044 is an apocalyptic number.

It is an amenable number.

77607044 is a deficient number, since it is larger than the sum of its proper divisors (59407960).

77607044 is a wasteful number, since it uses less digits than its factorization.

77607044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171814 (or 171812 counting only the distinct ones).

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

The square root of 77607044 is about 8809.4860235998. The cubic root of 77607044 is about 426.5471526696.

The spelling of 77607044 in words is "seventy-seven million, six hundred seven thousand, forty-four".