665010677 has 2 divisors, whose sum is σ = 665010678. Its totient is φ = 665010676.

The previous prime is 665010623. The next prime is 665010701. The reversal of 665010677 is 776010566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423083761 + 241926916 = 20569^2 + 15554^2 .

It is a cyclic number.

It is not a de Polignac number, because 665010677 - 2⁶ = 665010613 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 665010677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665010617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332505338 + 332505339.

It is an arithmetic number, because the mean of its divisors is an integer number (332505339).

Almost surely, 2^665010677 is an apocalyptic number.

It is an amenable number.

665010677 is a deficient number, since it is larger than the sum of its proper divisors (1).

665010677 is an equidigital number, since it uses as much as digits as its factorization.

665010677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 665010677 is about 25787.8009337749. The cubic root of 665010677 is about 872.8565448918.

The spelling of 665010677 in words is "six hundred sixty-five million, ten thousand, six hundred seventy-seven".