2975657 has 4 divisors (see below), whose sum is σ = 3048276. Its totient is φ = 2903040.

The previous prime is 2975653. The next prime is 2975677. The reversal of 2975657 is 7565792.

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 190096 + 2785561 = 436^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 2975657 - 2² = 2975653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 72577 = 2975657 / (2 + 9 + 7 + 5 + 6 + 5 + 7).

It is a d-powerful number, because it can be written as 2²⁰ + 9 + 7⁷ + 5² + 6⁷ + 5² + 7⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2975653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36248 + ... + 36329.

It is an arithmetic number, because the mean of its divisors is an integer number (762069).

2^2975657 is an apocalyptic number.

It is an amenable number.

2975657 is a deficient number, since it is larger than the sum of its proper divisors (72619).

2975657 is an equidigital number, since it uses as much as digits as its factorization.

2975657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72618.

The product of its digits is 132300, while the sum is 41.

The square root of 2975657 is about 1725.0092753374. The cubic root of 2975657 is about 143.8338006654.

The spelling of 2975657 in words is "two million, nine hundred seventy-five thousand, six hundred fifty-seven".