660955055 has 8 divisors (see below), whose sum is σ = 812491344. Its totient is φ = 515867200.

The previous prime is 660955051. The next prime is 660955063. The reversal of 660955055 is 550559066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660955055 - 2² = 660955051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660955051) 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, 1611881 + ... + 1612290.

It is an arithmetic number, because the mean of its divisors is an integer number (101561418).

Almost surely, 2^660955055 is an apocalyptic number.

660955055 is a deficient number, since it is larger than the sum of its proper divisors (151536289).

660955055 is a wasteful number, since it uses less digits than its factorization.

660955055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224217.

The product of its (nonzero) digits is 202500, while the sum is 41.

The square root of 660955055 is about 25709.0461705603. The cubic root of 660955055 is about 871.0785298471.

The spelling of 660955055 in words is "six hundred sixty million, nine hundred fifty-five thousand, fifty-five".