65812090 has 16 divisors (see below), whose sum is σ = 120231072. Its totient is φ = 25931664.

The previous prime is 65812073. The next prime is 65812091. The reversal of 65812090 is 9021856.

It is not an unprimeable number, because it can be changed into a prime (65812091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48444 + ... + 49783.

It is an arithmetic number, because the mean of its divisors is an integer number (7514442).

Almost surely, 2^65812090 is an apocalyptic number.

65812090 is a deficient number, since it is larger than the sum of its proper divisors (54418982).

65812090 is a wasteful number, since it uses less digits than its factorization.

65812090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98301.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 65812090 is about 8112.4651000790. The cubic root of 65812090 is about 403.7401074937.

The spelling of 65812090 in words is "sixty-five million, eight hundred twelve thousand, ninety".