660879827 has 8 divisors (see below), whose sum is σ = 678612480. Its totient is φ = 643365000.

The previous prime is 660879799. The next prime is 660879851. The reversal of 660879827 is 728978066.

It is a happy number.

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 660879827 - 2¹⁴ = 660863443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660879887) 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, 48299 + ... + 60452.

It is an arithmetic number, because the mean of its divisors is an integer number (84826560).

Almost surely, 2^660879827 is an apocalyptic number.

660879827 is a deficient number, since it is larger than the sum of its proper divisors (17732653).

660879827 is a wasteful number, since it uses less digits than its factorization.

660879827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108913.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 660879827 is about 25707.5830641467. The cubic root of 660879827 is about 871.0454807104.

The spelling of 660879827 in words is "six hundred sixty million, eight hundred seventy-nine thousand, eight hundred twenty-seven".