660601056 has 24 divisors (see below), whose sum is σ = 1734078024. Its totient is φ = 220200320.

The previous prime is 660601049. The next prime is 660601057. The reversal of 660601056 is 650106066.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660601057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3440535 + ... + 3440726.

It is an arithmetic number, because the mean of its divisors is an integer number (72253251).

Almost surely, 2^660601056 is an apocalyptic number.

It is an amenable number.

660601056 is an abundant number, since it is smaller than the sum of its proper divisors (1073476968).

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

660601056 is a wasteful number, since it uses less digits than its factorization.

660601056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6881274 (or 6881266 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 660601056 is about 25702.1605317530. The cubic root of 660601056 is about 870.9229892679.

It can be divided in two parts, 6606010 and 56, that added together give a palindrome (6606066).

The spelling of 660601056 in words is "six hundred sixty million, six hundred one thousand, fifty-six".