2872657 has 4 divisors (see below), whose sum is σ = 2885220. Its totient is φ = 2860096.

The previous prime is 2872621. The next prime is 2872669. The reversal of 2872657 is 7562782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179776 + 2692881 = 424^2 + 1641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2872657 is a prime.

It is a Duffinian number.

2872657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2872607) 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, 5932 + ... + 6397.

It is an arithmetic number, because the mean of its divisors is an integer number (721305).

2^2872657 is an apocalyptic number.

It is an amenable number.

2872657 is a deficient number, since it is larger than the sum of its proper divisors (12563).

2872657 is a wasteful number, since it uses less digits than its factorization.

2872657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12562.

The product of its digits is 47040, while the sum is 37.

The square root of 2872657 is about 1694.8914419514. The cubic root of 2872657 is about 142.1547113623.

The spelling of 2872657 in words is "two million, eight hundred seventy-two thousand, six hundred fifty-seven".