669020967 has 6 divisors (see below), whose sum is σ = 966363632. Its totient is φ = 446013972.

The previous prime is 669020959. The next prime is 669020971. The reversal of 669020967 is 769020966.

It is not a de Polignac number, because 669020967 - 2³ = 669020959 is a prime.

It is a super-3 number, since 3×669020967³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669020917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37167823 + ... + 37167840.

Almost surely, 2^669020967 is an apocalyptic number.

669020967 is a deficient number, since it is larger than the sum of its proper divisors (297342665).

669020967 is a wasteful number, since it uses less digits than its factorization.

669020967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74335669 (or 74335666 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 669020967 is about 25865.4396251059. The cubic root of 669020967 is about 874.6075919901.

Subtracting 669020967 from its reverse (769020966), we obtain a palindrome (99999999).

The spelling of 669020967 in words is "six hundred sixty-nine million, twenty thousand, nine hundred sixty-seven".