660080983 has 2 divisors, whose sum is σ = 660080984. Its totient is φ = 660080982.

The previous prime is 660080963. The next prime is 660081013. The reversal of 660080983 is 389080066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660080983 - 2⁵ = 660080951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660080903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330040491 + 330040492.

It is an arithmetic number, because the mean of its divisors is an integer number (330040492).

Almost surely, 2^660080983 is an apocalyptic number.

660080983 is a deficient number, since it is larger than the sum of its proper divisors (1).

660080983 is an equidigital number, since it uses as much as digits as its factorization.

660080983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 660080983 is about 25692.0412384847. The cubic root of 660080983 is about 870.6943780444.

The spelling of 660080983 in words is "six hundred sixty million, eighty thousand, nine hundred eighty-three".