7689631 has 2 divisors, whose sum is σ = 7689632. Its totient is φ = 7689630.

The previous prime is 7689629. The next prime is 7689653. The reversal of 7689631 is 1369867.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7689631 - 2¹ = 7689629 is a prime.

It is a super-2 number, since 2×7689631² = 118260849832322, which contains 22 as substring.

Together with 7689629, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7689931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3844815 + 3844816.

It is an arithmetic number, because the mean of its divisors is an integer number (3844816).

Almost surely, 2^7689631 is an apocalyptic number.

7689631 is a deficient number, since it is larger than the sum of its proper divisors (1).

7689631 is an equidigital number, since it uses as much as digits as its factorization.

7689631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 7689631 is about 2773.0183915726. The cubic root of 7689631 is about 197.3794040254.

The spelling of 7689631 in words is "seven million, six hundred eighty-nine thousand, six hundred thirty-one".