2504691 has 24 divisors (see below), whose sum is σ = 4193280. Its totient is φ = 1411056.

The previous prime is 2504687. The next prime is 2504693. The reversal of 2504691 is 1964052.

2504691 = T₂₀₃ + T₂₀₄ + ... + T₂₈₅.

It is not a de Polignac number, because 2504691 - 2² = 2504687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2504693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4990 + ... + 5468.

It is an arithmetic number, because the mean of its divisors is an integer number (174720).

2^2504691 is an apocalyptic number.

2504691 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2504691 is a deficient number, since it is larger than the sum of its proper divisors (1688589).

2504691 is a wasteful number, since it uses less digits than its factorization.

2504691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2504691 is about 1582.6215593123. The cubic root of 2504691 is about 135.8057166768.

The spelling of 2504691 in words is "two million, five hundred four thousand, six hundred ninety-one".