660605001 has 16 divisors (see below), whose sum is σ = 1030047744. Its totient is φ = 368709264.

The previous prime is 660604981. The next prime is 660605003. The reversal of 660605001 is 100506066.

It is not a de Polignac number, because 660605001 - 2⁵ = 660604969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (660605003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364881 + ... + 366686.

It is an arithmetic number, because the mean of its divisors is an integer number (64377984).

Almost surely, 2^660605001 is an apocalyptic number.

It is an amenable number.

660605001 is a deficient number, since it is larger than the sum of its proper divisors (369442743).

660605001 is a wasteful number, since it uses less digits than its factorization.

660605001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731620.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 660605001 is about 25702.2372761594. The cubic root of 660605001 is about 870.9247229337.

The spelling of 660605001 in words is "six hundred sixty million, six hundred five thousand, one".