655756998 has 16 divisors (see below), whose sum is σ = 1412399856. Its totient is φ = 201771360.

The previous prime is 655756991. The next prime is 655756999. The reversal of 655756998 is 899657556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655756991) 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, 4203493 + ... + 4203648.

It is an arithmetic number, because the mean of its divisors is an integer number (88274991).

Almost surely, 2^655756998 is an apocalyptic number.

655756998 is an abundant number, since it is smaller than the sum of its proper divisors (756642858).

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

655756998 is a wasteful number, since it uses less digits than its factorization.

655756998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407159.

The product of its digits is 20412000, while the sum is 60.

The square root of 655756998 is about 25607.7526932763. The cubic root of 655756998 is about 868.7889955203.

The spelling of 655756998 in words is "six hundred fifty-five million, seven hundred fifty-six thousand, nine hundred ninety-eight".