653597990 has 16 divisors (see below), whose sum is σ = 1177007760. Its totient is φ = 261321120.

The previous prime is 653597983. The next prime is 653597993. The reversal of 653597990 is 99795356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653597993) 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, 10556 + ... + 37664.

It is an arithmetic number, because the mean of its divisors is an integer number (73562985).

Almost surely, 2^653597990 is an apocalyptic number.

653597990 is a deficient number, since it is larger than the sum of its proper divisors (523409770).

653597990 is a wasteful number, since it uses less digits than its factorization.

653597990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29527.

The product of its (nonzero) digits is 2296350, while the sum is 53.

The square root of 653597990 is about 25565.5625793762. The cubic root of 653597990 is about 867.8344830470.

The spelling of 653597990 in words is "six hundred fifty-three million, five hundred ninety-seven thousand, nine hundred ninety".