669116061 has 12 divisors (see below), whose sum is σ = 972290592. Its totient is φ = 443405256.

The previous prime is 669116003. The next prime is 669116081. The reversal of 669116061 is 160611966.

It is not a de Polignac number, because 669116061 - 2¹⁵ = 669083293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669116081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221091 + ... + 224096.

It is an arithmetic number, because the mean of its divisors is an integer number (81024216).

Almost surely, 2^669116061 is an apocalyptic number.

It is an amenable number.

669116061 is a deficient number, since it is larger than the sum of its proper divisors (303174531).

669116061 is a wasteful number, since it uses less digits than its factorization.

669116061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445360 (or 445357 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 669116061 is about 25867.2778042066. The cubic root of 669116061 is about 874.6490286556.

The spelling of 669116061 in words is "six hundred sixty-nine million, one hundred sixteen thousand, sixty-one".