75820690 has 16 divisors (see below), whose sum is σ = 148884480. Its totient is φ = 27571120.

The previous prime is 75820649. The next prime is 75820709. The reversal of 75820690 is 9602857.

It is a super-2 number, since 2×75820690² = 11497554064152200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344530 + ... + 344749.

It is an arithmetic number, because the mean of its divisors is an integer number (9305280).

Almost surely, 2^75820690 is an apocalyptic number.

75820690 is a deficient number, since it is larger than the sum of its proper divisors (73063790).

75820690 is a wasteful number, since it uses less digits than its factorization.

75820690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689297.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 75820690 is about 8707.5076801574. The cubic root of 75820690 is about 423.2489708650.

It can be divided in two parts, 758206 and 90, that added together give a triangular number (758296 = T₁₂₃₁).

The spelling of 75820690 in words is "seventy-five million, eight hundred twenty thousand, six hundred ninety".