2681630 has 32 divisors (see below), whose sum is σ = 5711040. Its totient is φ = 887040.

The previous prime is 2681617. The next prime is 2681663. The reversal of 2681630 is 361862.

It is a super-2 number, since 2×2681630² = 14382278913800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2681630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370 + ... + 2690.

It is an arithmetic number, because the mean of its divisors is an integer number (178470).

2^2681630 is an apocalyptic number.

2681630 is an abundant number, since it is smaller than the sum of its proper divisors (3029410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2681630 is a wasteful number, since it uses less digits than its factorization.

2681630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2681630 is about 1637.5683191855. The cubic root of 2681630 is about 138.9311461344.

The spelling of 2681630 in words is "two million, six hundred eighty-one thousand, six hundred thirty".