60640631 has 2 divisors, whose sum is σ = 60640632. Its totient is φ = 60640630.

The previous prime is 60640597. The next prime is 60640633. The reversal of 60640631 is 13604606.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60640631 - 2¹⁴ = 60624247 is a prime.

It is a super-2 number, since 2×60640631² = 7354572256156322, which contains 22 as substring.

Together with 60640633, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60640631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60640633) 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 as a sum of consecutive naturals, namely, 30320315 + 30320316.

It is an arithmetic number, because the mean of its divisors is an integer number (30320316).

Almost surely, 2^60640631 is an apocalyptic number.

60640631 is a deficient number, since it is larger than the sum of its proper divisors (1).

60640631 is an equidigital number, since it uses as much as digits as its factorization.

60640631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 60640631 is about 7787.2094488334. The cubic root of 60640631 is about 392.8751597121.

The spelling of 60640631 in words is "sixty million, six hundred forty thousand, six hundred thirty-one".