14639691 has 16 divisors (see below), whose sum is σ = 21385728. Its totient is φ = 8834400.

The previous prime is 14639687. The next prime is 14639717. The reversal of 14639691 is 19693641.

It is not a de Polignac number, because 14639691 - 2² = 14639687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14639621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8125 + ... + 9761.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^14639691 is an apocalyptic number.

14639691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14639691 is a deficient number, since it is larger than the sum of its proper divisors (6746037).

14639691 is a wasteful number, since it uses less digits than its factorization.

14639691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922.

The product of its digits is 34992, while the sum is 39.

The square root of 14639691 is about 3826.1849145069. The cubic root of 14639691 is about 244.6305190117.

The spelling of 14639691 in words is "fourteen million, six hundred thirty-nine thousand, six hundred ninety-one".