660411007 has 4 divisors (see below), whose sum is σ = 668770720. Its totient is φ = 652051296.

The previous prime is 660411001. The next prime is 660411077. The reversal of 660411007 is 700114066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660411007 - 2³ = 660410999 is a prime.

It is a super-2 number, since 2×660411007² = 872285396333508098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660411001) 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, 4179738 + ... + 4179895.

It is an arithmetic number, because the mean of its divisors is an integer number (167192680).

Almost surely, 2^660411007 is an apocalyptic number.

660411007 is a deficient number, since it is larger than the sum of its proper divisors (8359713).

660411007 is an equidigital number, since it uses as much as digits as its factorization.

660411007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8359712.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 660411007 is about 25698.4631252532. The cubic root of 660411007 is about 870.8394623461.

The spelling of 660411007 in words is "six hundred sixty million, four hundred eleven thousand, seven".