789631 has 2 divisors, whose sum is σ = 789632. Its totient is φ = 789630.

The previous prime is 789623. The next prime is 789653. The reversal of 789631 is 136987.

It is a weak prime.

It is an emirp because it is prime and its reverse (136987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 789631 - 2³ = 789623 is a prime.

It is a super-2 number, since 2×789631² = 1247034232322, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (789611) 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, 394815 + 394816.

It is an arithmetic number, because the mean of its divisors is an integer number (394816).

2⁷⁸⁹⁶³¹ is an apocalyptic number.

789631 is a deficient number, since it is larger than the sum of its proper divisors (1).

789631 is an equidigital number, since it uses as much as digits as its factorization.

789631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 789631 is about 888.6118387688. The cubic root of 789631 is about 92.4289593330.

The spelling of 789631 in words is "seven hundred eighty-nine thousand, six hundred thirty-one".