12701657 has 4 divisors (see below), whose sum is σ = 12708816. Its totient is φ = 12694500.

The previous prime is 12701653. The next prime is 12701683. The reversal of 12701657 is 75610721.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12701657 - 2² = 12701653 is a prime.

It is a super-2 number, since 2×12701657² = 322664181091298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12701653) 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, 1298 + ... + 5204.

It is an arithmetic number, because the mean of its divisors is an integer number (3177204).

Almost surely, 2^12701657 is an apocalyptic number.

It is an amenable number.

12701657 is a deficient number, since it is larger than the sum of its proper divisors (7159).

12701657 is an equidigital number, since it uses as much as digits as its factorization.

12701657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7158.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 12701657 is about 3563.9384113646. The cubic root of 12701657 is about 233.3208018213.

The spelling of 12701657 in words is "twelve million, seven hundred one thousand, six hundred fifty-seven".