772631 has 2 divisors, whose sum is σ = 772632. Its totient is φ = 772630.

The previous prime is 772619. The next prime is 772649. The reversal of 772631 is 136277.

It is a weak prime.

It is an emirp because it is prime and its reverse (136277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 772631 - 2⁶ = 772567 is a prime.

It is a super-2 number, since 2×772631² = 1193917324322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 772631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (772661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386315 + 386316.

It is an arithmetic number, because the mean of its divisors is an integer number (386316).

2⁷⁷²⁶³¹ is an apocalyptic number.

772631 is a deficient number, since it is larger than the sum of its proper divisors (1).

772631 is an equidigital number, since it uses as much as digits as its factorization.

772631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 26.

The square root of 772631 is about 878.9943116995. The cubic root of 772631 is about 91.7608391246.

The spelling of 772631 in words is "seven hundred seventy-two thousand, six hundred thirty-one".