65607832621 has 2 divisors, whose sum is σ = 65607832622. Its totient is φ = 65607832620.

The previous prime is 65607832529. The next prime is 65607832627. The reversal of 65607832621 is 12623870656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50382740521 + 15225092100 = 224461^2 + 123390^2 .

It is a cyclic number.

It is not a de Polignac number, because 65607832621 - 2⁹ = 65607832109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65607832627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32803916310 + 32803916311.

It is an arithmetic number, because the mean of its divisors is an integer number (32803916311).

Almost surely, 2^65607832621 is an apocalyptic number.

It is an amenable number.

65607832621 is a deficient number, since it is larger than the sum of its proper divisors (1).

65607832621 is an equidigital number, since it uses as much as digits as its factorization.

65607832621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 65607832621 in words is "sixty-five billion, six hundred seven million, eight hundred thirty-two thousand, six hundred twenty-one".