75865990 has 64 divisors (see below), whose sum is σ = 148635648. Its totient is φ = 27820800.

The previous prime is 75865973. The next prime is 75866017. The reversal of 75865990 is 9956857.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 597307 + ... + 597433.

It is an arithmetic number, because the mean of its divisors is an integer number (2322432).

Almost surely, 2^75865990 is an apocalyptic number.

75865990 is a deficient number, since it is larger than the sum of its proper divisors (72769658).

75865990 is a wasteful number, since it uses less digits than its factorization.

75865990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 75865990 is about 8710.1084953059. The cubic root of 75865990 is about 423.3332458443. Note that the first 3 decimals are identical.

The spelling of 75865990 in words is "seventy-five million, eight hundred sixty-five thousand, nine hundred ninety".