65813090 has 32 divisors (see below), whose sum is σ = 136439424. Its totient is φ = 22389120.

The previous prime is 65813087. The next prime is 65813117. The reversal of 65813090 is 9031856.

65813090 = T₃₇₁ + T₃₇₂ + ... + T₇₆₃.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5582 + ... + 12758.

It is an arithmetic number, because the mean of its divisors is an integer number (4263732).

Almost surely, 2^65813090 is an apocalyptic number.

65813090 is an abundant number, since it is smaller than the sum of its proper divisors (70626334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65813090 is a wasteful number, since it uses less digits than its factorization.

65813090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 65813090 is about 8112.5267333920. The cubic root of 65813090 is about 403.7421523969.

The spelling of 65813090 in words is "sixty-five million, eight hundred thirteen thousand, ninety".