669262965 has 64 divisors (see below), whose sum is σ = 1259698176. Its totient is φ = 297061632.

The previous prime is 669262961. The next prime is 669263003. The reversal of 669262965 is 569262966.

669262965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 669262965 - 2² = 669262961 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669262961) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1024579 + ... + 1025231.

It is an arithmetic number, because the mean of its divisors is an integer number (19682784).

Almost surely, 2^669262965 is an apocalyptic number.

It is an amenable number.

669262965 is a deficient number, since it is larger than the sum of its proper divisors (590435211).

669262965 is a wasteful number, since it uses less digits than its factorization.

669262965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938.

The product of its digits is 2099520, while the sum is 51.

The square root of 669262965 is about 25870.1172204534. The cubic root of 669262965 is about 874.7130335153.

Subtracting from 669262965 its reverse (569262966), we obtain a palindrome (99999999).

The spelling of 669262965 in words is "six hundred sixty-nine million, two hundred sixty-two thousand, nine hundred sixty-five".