2630639 has 8 divisors (see below), whose sum is σ = 2881920. Its totient is φ = 2381400.

The previous prime is 2630627. The next prime is 2630681. The reversal of 2630639 is 9360362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2630639 - 2⁴ = 2630623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2630609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3854 + ... + 4484.

It is an arithmetic number, because the mean of its divisors is an integer number (360240).

2^2630639 is an apocalyptic number.

2630639 is a deficient number, since it is larger than the sum of its proper divisors (251281).

2630639 is a wasteful number, since it uses less digits than its factorization.

2630639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 2630639 is about 1621.9244741972. The cubic root of 2630639 is about 138.0449164159.

The spelling of 2630639 in words is "two million, six hundred thirty thousand, six hundred thirty-nine".