2635720 has 32 divisors (see below), whose sum is σ = 5987520. Its totient is φ = 1044160.

The previous prime is 2635709. The next prime is 2635727. The reversal of 2635720 is 275362.

2635720 is nontrivially palindromic in base 7.

It is not an unprimeable number, because it can be changed into a prime (2635727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4989 + ... + 5491.

It is an arithmetic number, because the mean of its divisors is an integer number (187110).

2^2635720 is an apocalyptic number.

2635720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2635720 is an abundant number, since it is smaller than the sum of its proper divisors (3351800).

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

2635720 is a wasteful number, since it uses less digits than its factorization.

2635720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 2635720 is about 1623.4900677245. The cubic root of 2635720 is about 138.1337357892.

The spelling of 2635720 in words is "two million, six hundred thirty-five thousand, seven hundred twenty".