65320437 has 64 divisors (see below), whose sum is σ = 114057216. Its totient is φ = 32313600.

The previous prime is 65320427. The next prime is 65320487. The reversal of 65320437 is 73402356.

It is not a de Polignac number, because 65320437 - 2¹² = 65316341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65320427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 634128 + ... + 634230.

It is an arithmetic number, because the mean of its divisors is an integer number (1782144).

Almost surely, 2^65320437 is an apocalyptic number.

It is an amenable number.

65320437 is a deficient number, since it is larger than the sum of its proper divisors (48736779).

65320437 is a wasteful number, since it uses less digits than its factorization.

65320437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 65320437 is about 8082.1059755487. The cubic root of 65320437 is about 402.7322055575.

The spelling of 65320437 in words is "sixty-five million, three hundred twenty thousand, four hundred thirty-seven".