66292631 has 2 divisors, whose sum is σ = 66292632. Its totient is φ = 66292630.

The previous prime is 66292621. The next prime is 66292651. The reversal of 66292631 is 13629266.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66292631 is a prime.

It is a super-2 number, since 2×66292631² = 8789425849804322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66292591 and 66292600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66292621) 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, 33146315 + 33146316.

It is an arithmetic number, because the mean of its divisors is an integer number (33146316).

Almost surely, 2^66292631 is an apocalyptic number.

66292631 is a deficient number, since it is larger than the sum of its proper divisors (1).

66292631 is an equidigital number, since it uses as much as digits as its factorization.

66292631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 66292631 is about 8142.0286784069. The cubic root of 66292631 is about 404.7203902478.

The spelling of 66292631 in words is "sixty-six million, two hundred ninety-two thousand, six hundred thirty-one".