65604431 has 2 divisors, whose sum is σ = 65604432. Its totient is φ = 65604430.

The previous prime is 65604421. The next prime is 65604503. The reversal of 65604431 is 13440656.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65604431 - 2²² = 61410127 is a prime.

It is a super-2 number, since 2×65604431² = 8607882733667522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65604394 and 65604403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65604421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32802215 + 32802216.

It is an arithmetic number, because the mean of its divisors is an integer number (32802216).

Almost surely, 2^65604431 is an apocalyptic number.

65604431 is a deficient number, since it is larger than the sum of its proper divisors (1).

65604431 is an equidigital number, since it uses as much as digits as its factorization.

65604431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 65604431 is about 8099.6562272729. The cubic root of 65604431 is about 403.3150153707.

The spelling of 65604431 in words is "sixty-five million, six hundred four thousand, four hundred thirty-one".