669517301 has 2 divisors, whose sum is σ = 669517302. Its totient is φ = 669517300.

The previous prime is 669517279. The next prime is 669517313. The reversal of 669517301 is 103715966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 366722500 + 302794801 = 19150^2 + 17401^2 .

It is a cyclic number.

It is not a de Polignac number, because 669517301 - 2¹⁸ = 669255157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669517601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334758650 + 334758651.

It is an arithmetic number, because the mean of its divisors is an integer number (334758651).

Almost surely, 2^669517301 is an apocalyptic number.

It is an amenable number.

669517301 is a deficient number, since it is larger than the sum of its proper divisors (1).

669517301 is an equidigital number, since it uses as much as digits as its factorization.

669517301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 669517301 is about 25875.0323864532. The cubic root of 669517301 is about 874.8238234690.

The spelling of 669517301 in words is "six hundred sixty-nine million, five hundred seventeen thousand, three hundred one".