14638657 has 4 divisors (see below), whose sum is σ = 15969456. Its totient is φ = 13307860.

The previous prime is 14638633. The next prime is 14638661. The reversal of 14638657 is 75683641.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75683641 = 11 ⋅6880331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14638657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14638157) 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, 665383 + ... + 665404.

It is an arithmetic number, because the mean of its divisors is an integer number (3992364).

Almost surely, 2^14638657 is an apocalyptic number.

It is an amenable number.

14638657 is a deficient number, since it is larger than the sum of its proper divisors (1330799).

14638657 is a wasteful number, since it uses less digits than its factorization.

14638657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330798.

The product of its digits is 120960, while the sum is 40.

The square root of 14638657 is about 3826.0497905804. The cubic root of 14638657 is about 244.6247594659.

The spelling of 14638657 in words is "fourteen million, six hundred thirty-eight thousand, six hundred fifty-seven".