2621630 has 16 divisors (see below), whose sum is σ = 5148144. Its totient is φ = 953280.

The previous prime is 2621617. The next prime is 2621669. The reversal of 2621630 is 361262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11807 + ... + 12026.

It is an arithmetic number, because the mean of its divisors is an integer number (321759).

2^2621630 is an apocalyptic number.

2621630 is a deficient number, since it is larger than the sum of its proper divisors (2526514).

2621630 is a wasteful number, since it uses less digits than its factorization.

2621630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23851.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2621630 is about 1619.1448360168. The cubic root of 2621630 is about 137.8871513201.

Adding to 2621630 its reverse (361262), we get a palindrome (2982892).

The spelling of 2621630 in words is "two million, six hundred twenty-one thousand, six hundred thirty".