2653690 has 32 divisors (see below), whose sum is σ = 5216400. Its totient is φ = 966144.

The previous prime is 2653687. The next prime is 2653697. The reversal of 2653690 is 963562.

It can be written as a sum of positive squares in 8 ways, for example, as 303601 + 2350089 = 551^2 + 1533^2 .

It is a super-2 number, since 2×2653690² = 14084141232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2653697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17736 + ... + 17884.

2^2653690 is an apocalyptic number.

2653690 is a deficient number, since it is larger than the sum of its proper divisors (2562710).

2653690 is a wasteful number, since it uses less digits than its factorization.

2653690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 2653690 is about 1629.0150398324. The cubic root of 2653690 is about 138.4469510590.

The spelling of 2653690 in words is "two million, six hundred fifty-three thousand, six hundred ninety".