2637949 has 4 divisors (see below), whose sum is σ = 2682720. Its totient is φ = 2593180.

The previous prime is 2637937. The next prime is 2637953. The reversal of 2637949 is 9497362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2637949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2637919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22297 + ... + 22414.

It is an arithmetic number, because the mean of its divisors is an integer number (670680).

2^2637949 is an apocalyptic number.

It is an amenable number.

2637949 is a deficient number, since it is larger than the sum of its proper divisors (44771).

2637949 is an equidigital number, since it uses as much as digits as its factorization.

2637949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44770.

The product of its digits is 81648, while the sum is 40.

The square root of 2637949 is about 1624.1764066751. The cubic root of 2637949 is about 138.1726642214.

The spelling of 2637949 in words is "two million, six hundred thirty-seven thousand, nine hundred forty-nine".