65304990 has 48 divisors (see below), whose sum is σ = 179785008. Its totient is φ = 16389888.

The previous prime is 65304983. The next prime is 65304991. The reversal of 65304990 is 9940356.

65304990 = 3612² + 3613² + ... + 3616².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65304991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19812 + ... + 22871.

It is an arithmetic number, because the mean of its divisors is an integer number (3745521).

Almost surely, 2^65304990 is an apocalyptic number.

65304990 is an abundant number, since it is smaller than the sum of its proper divisors (114480018).

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

65304990 is a wasteful number, since it uses less digits than its factorization.

65304990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42713 (or 42710 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 65304990 is about 8081.1502894081. The cubic root of 65304990 is about 402.7004569700.

The spelling of 65304990 in words is "sixty-five million, three hundred four thousand, nine hundred ninety".