65000990 has 64 divisors (see below), whose sum is σ = 128241792. Its totient is φ = 23654400.

The previous prime is 65000989. The next prime is 65001019. The reversal of 65000990 is 9900056.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575174 + ... + 575286.

It is an arithmetic number, because the mean of its divisors is an integer number (2003778).

Almost surely, 2^65000990 is an apocalyptic number.

65000990 is a deficient number, since it is larger than the sum of its proper divisors (63240802).

65000990 is a wasteful number, since it uses less digits than its factorization.

65000990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 65000990 is about 8062.3191452584. The cubic root of 65000990 is about 402.0746171401.

The spelling of 65000990 in words is "sixty-five million, nine hundred ninety", and thus it is an aban number.