660416627 has 4 divisors (see below), whose sum is σ = 711217920. Its totient is φ = 609615336.

The previous prime is 660416609. The next prime is 660416639. The reversal of 660416627 is 726614066.

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 660416627 - 2¹⁰ = 660415603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660410627) 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, 25400627 + ... + 25400652.

It is an arithmetic number, because the mean of its divisors is an integer number (177804480).

Almost surely, 2^660416627 is an apocalyptic number.

660416627 is a deficient number, since it is larger than the sum of its proper divisors (50801293).

660416627 is a wasteful number, since it uses less digits than its factorization.

660416627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50801292.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 660416627 is about 25698.5724700809. The cubic root of 660416627 is about 870.8419325774.

The spelling of 660416627 in words is "six hundred sixty million, four hundred sixteen thousand, six hundred twenty-seven".