660887627 has 2 divisors, whose sum is σ = 660887628. Its totient is φ = 660887626.

The previous prime is 660887551. The next prime is 660887657. The reversal of 660887627 is 726788066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660887627 - 2²⁰ = 659839051 is a prime.

It is a super-2 number, since 2×660887627² = 873544911043382258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (660887657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330443813 + 330443814.

It is an arithmetic number, because the mean of its divisors is an integer number (330443814).

Almost surely, 2^660887627 is an apocalyptic number.

660887627 is a deficient number, since it is larger than the sum of its proper divisors (1).

660887627 is an equidigital number, since it uses as much as digits as its factorization.

660887627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The square root of 660887627 is about 25707.7347699092. The cubic root of 660887627 is about 871.0489075200.

The spelling of 660887627 in words is "six hundred sixty million, eight hundred eighty-seven thousand, six hundred twenty-seven".