655989102 has 12 divisors (see below), whose sum is σ = 1421309760. Its totient is φ = 218663028.

The previous prime is 655989097. The next prime is 655989107. The reversal of 655989102 is 201989556.

655989102 is a `hidden beast` number, since 6 + 559 + 8 + 91 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (655989097) and next prime (655989107).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655989107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18221902 + ... + 18221937.

It is an arithmetic number, because the mean of its divisors is an integer number (118442480).

Almost surely, 2^655989102 is an apocalyptic number.

655989102 is an abundant number, since it is smaller than the sum of its proper divisors (765320658).

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

655989102 is a wasteful number, since it uses less digits than its factorization.

655989102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36443847 (or 36443844 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 655989102 is about 25612.2842011407. The cubic root of 655989102 is about 868.8914855255.

The spelling of 655989102 in words is "six hundred fifty-five million, nine hundred eighty-nine thousand, one hundred two".