12620657 has 8 divisors (see below), whose sum is σ = 14567232. Its totient is φ = 10710000.

The previous prime is 12620653. The next prime is 12620677. The reversal of 12620657 is 75602621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12620657 - 2² = 12620653 is a prime.

It is a super-2 number, since 2×12620657² = 318561966223298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12620653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8219 + ... + 9632.

It is an arithmetic number, because the mean of its divisors is an integer number (1820904).

Almost surely, 2^12620657 is an apocalyptic number.

It is an amenable number.

12620657 is a deficient number, since it is larger than the sum of its proper divisors (1946575).

12620657 is a wasteful number, since it uses less digits than its factorization.

12620657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17959.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 12620657 is about 3552.5564034931. The cubic root of 12620657 is about 232.8237721401.

The spelling of 12620657 in words is "twelve million, six hundred twenty thousand, six hundred fifty-seven".