2501668 has 12 divisors (see below), whose sum is σ = 4714780. Its totient is φ = 1154592.

The previous prime is 2501657. The next prime is 2501677. The reversal of 2501668 is 8661052.

It can be written as a sum of positive squares in 2 ways, for example, as 842724 + 1658944 = 918^2 + 1288^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24003 + ... + 24106.

2^2501668 is an apocalyptic number.

It is an amenable number.

2501668 is a deficient number, since it is larger than the sum of its proper divisors (2213112).

2501668 is a wasteful number, since it uses less digits than its factorization.

2501668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48126 (or 48124 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2501668 is about 1581.6662100456. Note that the first 3 decimals coincide. The cubic root of 2501668 is about 135.7510584431.

The spelling of 2501668 in words is "two million, five hundred one thousand, six hundred sixty-eight".