612966631 has 2 divisors, whose sum is σ = 612966632. Its totient is φ = 612966630.

The previous prime is 612966593. The next prime is 612966661. The reversal of 612966631 is 136669216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612966631 - 2¹⁹ = 612442343 is a prime.

It is a super-2 number, since 2×612966631² = 751456181438980322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612966661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306483315 + 306483316.

It is an arithmetic number, because the mean of its divisors is an integer number (306483316).

Almost surely, 2^612966631 is an apocalyptic number.

612966631 is a deficient number, since it is larger than the sum of its proper divisors (1).

612966631 is an equidigital number, since it uses as much as digits as its factorization.

612966631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 612966631 is about 24758.1629165009. The cubic root of 612966631 is about 849.4652373364.

It can be divided in two parts, 61 and 2966631, that added together give a palindrome (2966692).

The spelling of 612966631 in words is "six hundred twelve million, nine hundred sixty-six thousand, six hundred thirty-one".