660572101 has 8 divisors (see below), whose sum is σ = 755201664. Its totient is φ = 566008080.

The previous prime is 660572057. The next prime is 660572117. The reversal of 660572101 is 101275066.

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

It is a cyclic number.

It is not a de Polignac number, because 660572101 - 2¹³ = 660563909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660572101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660572141) 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, 7551 + ... + 37123.

It is an arithmetic number, because the mean of its divisors is an integer number (94400208).

Almost surely, 2^660572101 is an apocalyptic number.

It is an amenable number.

660572101 is a deficient number, since it is larger than the sum of its proper divisors (94629563).

660572101 is a wasteful number, since it uses less digits than its factorization.

660572101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32771.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 660572101 is about 25701.5972460857. The cubic root of 660572101 is about 870.9102645211.

The spelling of 660572101 in words is "six hundred sixty million, five hundred seventy-two thousand, one hundred one".