2497864 has 8 divisors (see below), whose sum is σ = 4683510. Its totient is φ = 1248928.

The previous prime is 2497849. The next prime is 2497867. The reversal of 2497864 is 4687942.

It can be written as a sum of positive squares in only one way, i.e., 2125764 + 372100 = 1458^2 + 610^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2497867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156109 + ... + 156124.

2^2497864 is an apocalyptic number.

It is an amenable number.

2497864 is a deficient number, since it is larger than the sum of its proper divisors (2185646).

2497864 is a wasteful number, since it uses less digits than its factorization.

2497864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312239 (or 312235 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 2497864 is about 1580.4632232355. The cubic root of 2497864 is about 135.6822165092.

The spelling of 2497864 in words is "two million, four hundred ninety-seven thousand, eight hundred sixty-four".