2136657 has 4 divisors (see below), whose sum is σ = 2848880. Its totient is φ = 1424436.

The previous prime is 2136649. The next prime is 2136661. The reversal of 2136657 is 7566312.

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.

It is not a de Polignac number, because 2136657 - 2³ = 2136649 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136157) 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, 356107 + ... + 356112.

It is an arithmetic number, because the mean of its divisors is an integer number (712220).

2^2136657 is an apocalyptic number.

It is an amenable number.

2136657 is a deficient number, since it is larger than the sum of its proper divisors (712223).

2136657 is an equidigital number, since it uses as much as digits as its factorization.

2136657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712222.

The product of its digits is 7560, while the sum is 30.

The square root of 2136657 is about 1461.7308233734. The cubic root of 2136657 is about 128.7987366940.

The spelling of 2136657 in words is "two million, one hundred thirty-six thousand, six hundred fifty-seven".