2630657 has 4 divisors (see below), whose sum is σ = 2646960. Its totient is φ = 2614356.

The previous prime is 2630627. The next prime is 2630681. The reversal of 2630657 is 7560362.

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 an emirpimes, since its reverse is a distinct semiprime: 7560362 = 2 ⋅3780181.

It is a cyclic number.

It is not a de Polignac number, because 2630657 - 2²⁰ = 1582081 is a prime.

It is a d-powerful number, because it can be written as 2³ + 6⁷ + 3 + 0 + 6⁷ + 5⁹ + 7⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2630627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7907 + ... + 8232.

It is an arithmetic number, because the mean of its divisors is an integer number (661740).

2^2630657 is an apocalyptic number.

It is an amenable number.

2630657 is a deficient number, since it is larger than the sum of its proper divisors (16303).

2630657 is a wasteful number, since it uses less digits than its factorization.

2630657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16302.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 2630657 is about 1621.9300231514. The cubic root of 2630657 is about 138.0452312700.

The spelling of 2630657 in words is "two million, six hundred thirty thousand, six hundred fifty-seven".