660610055 has 16 divisors (see below), whose sum is σ = 959273280. Its totient is φ = 426342912.

The previous prime is 660610043. The next prime is 660610063. The reversal of 660610055 is 550016066.

It is a cyclic number.

It is not a de Polignac number, because 660610055 - 2⁴ = 660610039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554540 + ... + 555729.

It is an arithmetic number, because the mean of its divisors is an integer number (59954580).

Almost surely, 2^660610055 is an apocalyptic number.

660610055 is a deficient number, since it is larger than the sum of its proper divisors (298663225).

660610055 is a wasteful number, since it uses less digits than its factorization.

660610055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110298.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 660610055 is about 25702.3355942607. The cubic root of 660610055 is about 870.9269439495.

It can be divided in two parts, 6606 and 10055, that added together give a palindrome (16661).

The spelling of 660610055 in words is "six hundred sixty million, six hundred ten thousand, fifty-five".