7691631 has 4 divisors (see below), whose sum is σ = 10255512. Its totient is φ = 5127752.

The previous prime is 7691623. The next prime is 7691639. The reversal of 7691631 is 1361967.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (7691623) and next prime (7691639).

It is a cyclic number.

It is not a de Polignac number, because 7691631 - 2³ = 7691623 is a prime.

It is a super-2 number, since 2×7691631² = 118322374880322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7691592 and 7691601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7691639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281936 + ... + 1281941.

It is an arithmetic number, because the mean of its divisors is an integer number (2563878).

Almost surely, 2^7691631 is an apocalyptic number.

7691631 is a deficient number, since it is larger than the sum of its proper divisors (2563881).

7691631 is a wasteful number, since it uses less digits than its factorization.

7691631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563880.

The product of its digits is 6804, while the sum is 33.

The square root of 7691631 is about 2773.3789860025. The cubic root of 7691631 is about 197.3965147116.

The spelling of 7691631 in words is "seven million, six hundred ninety-one thousand, six hundred thirty-one".