75977644 has 12 divisors (see below), whose sum is σ = 133270984. Its totient is φ = 37900224.

The previous prime is 75977639. The next prime is 75977677. The reversal of 75977644 is 44677957.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20202 + ... + 23665.

Almost surely, 2^75977644 is an apocalyptic number.

It is an amenable number.

75977644 is a deficient number, since it is larger than the sum of its proper divisors (57293340).

75977644 is a wasteful number, since it uses less digits than its factorization.

75977644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44304 (or 44302 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 49.

The square root of 75977644 is about 8716.5155882382. The cubic root of 75977644 is about 423.5408209874.

It can be divided in two parts, 759 and 77644, that multiplied together give a triangular number (58931796 = T₁₀₈₅₆).

The spelling of 75977644 in words is "seventy-five million, nine hundred seventy-seven thousand, six hundred forty-four".