2637985 has 32 divisors (see below), whose sum is σ = 3939840. Its totient is φ = 1655808.

The previous prime is 2637983. The next prime is 2637997. The reversal of 2637985 is 5897362.

It is not a de Polignac number, because 2637985 - 2¹ = 2637983 is a prime.

2637985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2637983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23289 + ... + 23401.

It is an arithmetic number, because the mean of its divisors is an integer number (123120).

2^2637985 is an apocalyptic number.

It is an amenable number.

2637985 is a deficient number, since it is larger than the sum of its proper divisors (1301855).

2637985 is a wasteful number, since it uses less digits than its factorization.

2637985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177.

The product of its digits is 90720, while the sum is 40.

The square root of 2637985 is about 1624.1874891773. The cubic root of 2637985 is about 138.1732927644.

The spelling of 2637985 in words is "two million, six hundred thirty-seven thousand, nine hundred eighty-five".