2637990 has 24 divisors (see below), whose sum is σ = 6859008. Its totient is φ = 703440.

The previous prime is 2637983. The next prime is 2637997. The reversal of 2637990 is 997362.

It is an interprime number because it is at equal distance from previous prime (2637983) and next prime (2637997).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2637997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14566 + ... + 14745.

It is an arithmetic number, because the mean of its divisors is an integer number (285792).

2^2637990 is an apocalyptic number.

2637990 is an abundant number, since it is smaller than the sum of its proper divisors (4221018).

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

2637990 is a wasteful number, since it uses less digits than its factorization.

2637990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29324 (or 29321 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 2637990 is about 1624.1890284077. The cubic root of 2637990 is about 138.1733800616.

The spelling of 2637990 in words is "two million, six hundred thirty-seven thousand, nine hundred ninety".