669276545 has 48 divisors (see below), whose sum is σ = 956505600. Its totient is φ = 448156800.

The previous prime is 669276499. The next prime is 669276551. The reversal of 669276545 is 545672966.

It is not a de Polignac number, because 669276545 - 2²⁰ = 668227969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 669276493 and 669276502.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2922491 + ... + 2922719.

It is an arithmetic number, because the mean of its divisors is an integer number (19927200).

Almost surely, 2^669276545 is an apocalyptic number.

It is an amenable number.

669276545 is a deficient number, since it is larger than the sum of its proper divisors (287229055).

669276545 is a wasteful number, since it uses less digits than its factorization.

669276545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 471 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 50.

The square root of 669276545 is about 25870.3796841098. The cubic root of 669276545 is about 874.7189497362.

The spelling of 669276545 in words is "six hundred sixty-nine million, two hundred seventy-six thousand, five hundred forty-five".