660877051 has 2 divisors, whose sum is σ = 660877052. Its totient is φ = 660877050.

The previous prime is 660877039. The next prime is 660877067. The reversal of 660877051 is 150778066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660877051 - 2¹¹ = 660875003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 660876995 and 660877013.

It is not a weakly prime, because it can be changed into another prime (660877351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330438525 + 330438526.

It is an arithmetic number, because the mean of its divisors is an integer number (330438526).

Almost surely, 2^660877051 is an apocalyptic number.

660877051 is a deficient number, since it is larger than the sum of its proper divisors (1).

660877051 is an equidigital number, since it uses as much as digits as its factorization.

660877051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 660877051 is about 25707.5290722387. The cubic root of 660877051 is about 871.0442611112.

The spelling of 660877051 in words is "six hundred sixty million, eight hundred seventy-seven thousand, fifty-one".