75780988 has 12 divisors (see below), whose sum is σ = 136894912. Its totient is φ = 36668160.

The previous prime is 75780979. The next prime is 75781003. The reversal of 75780988 is 88908757.

It is a super-2 number, since 2×75780988² = 11485516284512288, which contains 22 as substring.

It is a congruent number.

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, 305445 + ... + 305692.

Almost surely, 2^75780988 is an apocalyptic number.

It is an amenable number.

75780988 is a deficient number, since it is larger than the sum of its proper divisors (61113924).

75780988 is a wasteful number, since it uses less digits than its factorization.

75780988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611172 (or 611170 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 52.

The square root of 75780988 is about 8705.2276248241. The cubic root of 75780988 is about 423.1750826581.

The spelling of 75780988 in words is "seventy-five million, seven hundred eighty thousand, nine hundred eighty-eight".