65624623 has 2 divisors, whose sum is σ = 65624624. Its totient is φ = 65624622.

The previous prime is 65624621. The next prime is 65624677. The reversal of 65624623 is 32642656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65624623 - 2¹ = 65624621 is a prime.

It is a super-2 number, since 2×65624623² = 8613182287784258, which contains 22 as substring.

Together with 65624621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65624621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32812311 + 32812312.

It is an arithmetic number, because the mean of its divisors is an integer number (32812312).

Almost surely, 2^65624623 is an apocalyptic number.

65624623 is a deficient number, since it is larger than the sum of its proper divisors (1).

65624623 is an equidigital number, since it uses as much as digits as its factorization.

65624623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 34.

The square root of 65624623 is about 8100.9026040312. The cubic root of 65624623 is about 403.3563891077.

The spelling of 65624623 in words is "sixty-five million, six hundred twenty-four thousand, six hundred twenty-three".