653614864 has 40 divisors (see below), whose sum is σ = 1456547648. Its totient is φ = 278328960.

The previous prime is 653614849. The next prime is 653614883. The reversal of 653614864 is 468416356.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 653614864.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002 + ... + 36169.

Almost surely, 2^653614864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 653614864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (728273824).

653614864 is an abundant number, since it is smaller than the sum of its proper divisors (802932784).

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

653614864 is a wasteful number, since it uses less digits than its factorization.

653614864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37343 (or 37337 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 653614864 is about 25565.8925914978. The cubic root of 653614864 is about 867.8419513039.

It can be divided in two parts, 65361 and 4864, that added together give a square (70225 = 265²).

The spelling of 653614864 in words is "six hundred fifty-three million, six hundred fourteen thousand, eight hundred sixty-four".