65408790 has 16 divisors (see below), whose sum is σ = 156981168. Its totient is φ = 17442336.

The previous prime is 65408789. The next prime is 65408797. The reversal of 65408790 is 9780456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65408797) 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, 1090117 + ... + 1090176.

It is an arithmetic number, because the mean of its divisors is an integer number (9811323).

Almost surely, 2^65408790 is an apocalyptic number.

65408790 is an abundant number, since it is smaller than the sum of its proper divisors (91572378).

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

65408790 is a wasteful number, since it uses less digits than its factorization.

65408790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180303.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 65408790 is about 8087.5700924320. The cubic root of 65408790 is about 402.9137034629.

The spelling of 65408790 in words is "sixty-five million, four hundred eight thousand, seven hundred ninety".