65306390 has 16 divisors (see below), whose sum is σ = 117720432. Its totient is φ = 26085024.

The previous prime is 65306389. The next prime is 65306419. The reversal of 65306390 is 9360356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3257 + ... + 11883.

It is an arithmetic number, because the mean of its divisors is an integer number (7357527).

Almost surely, 2^65306390 is an apocalyptic number.

65306390 is a deficient number, since it is larger than the sum of its proper divisors (52414042).

65306390 is a wasteful number, since it uses less digits than its factorization.

65306390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9391.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 65306390 is about 8081.2369102756. The cubic root of 65306390 is about 402.7033346297.

The spelling of 65306390 in words is "sixty-five million, three hundred six thousand, three hundred ninety".