669570265 has 16 divisors (see below), whose sum is σ = 988904448. Its totient is φ = 423815616.

The previous prime is 669570199. The next prime is 669570283. The reversal of 669570265 is 562075966.

It is not a de Polignac number, because 669570265 - 2¹¹ = 669568217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735337 + ... + 736246.

It is an arithmetic number, because the mean of its divisors is an integer number (61806528).

Almost surely, 2^669570265 is an apocalyptic number.

669570265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

669570265 is a deficient number, since it is larger than the sum of its proper divisors (319334183).

669570265 is a wasteful number, since it uses less digits than its factorization.

669570265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471608.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 669570265 is about 25876.0558238693. The cubic root of 669570265 is about 874.8468913056.

The spelling of 669570265 in words is "six hundred sixty-nine million, five hundred seventy thousand, two hundred sixty-five".