65901623 has 2 divisors, whose sum is σ = 65901624. Its totient is φ = 65901622.

The previous prime is 65901611. The next prime is 65901679. The reversal of 65901623 is 32610956.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65901623 - 2⁴ = 65901607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65901623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65901023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32950811 + 32950812.

It is an arithmetic number, because the mean of its divisors is an integer number (32950812).

Almost surely, 2^65901623 is an apocalyptic number.

65901623 is a deficient number, since it is larger than the sum of its proper divisors (1).

65901623 is an equidigital number, since it uses as much as digits as its factorization.

65901623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 65901623 is about 8117.9814609298. The cubic root of 65901623 is about 403.9231117769.

The spelling of 65901623 in words is "sixty-five million, nine hundred one thousand, six hundred twenty-three".