669682515 has 8 divisors (see below), whose sum is σ = 1071492048. Its totient is φ = 357164000.

The previous prime is 669682501. The next prime is 669682523. The reversal of 669682515 is 515286966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 669682515 - 2⁵ = 669682483 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 7 ways as a sum of consecutive naturals, for example, 22322736 + ... + 22322765.

It is an arithmetic number, because the mean of its divisors is an integer number (133936506).

Almost surely, 2^669682515 is an apocalyptic number.

669682515 is a deficient number, since it is larger than the sum of its proper divisors (401809533).

669682515 is a wasteful number, since it uses less digits than its factorization.

669682515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44645509.

The product of its digits is 777600, while the sum is 48.

The square root of 669682515 is about 25878.2247265920. The cubic root of 669682515 is about 874.8957764297.

The spelling of 669682515 in words is "six hundred sixty-nine million, six hundred eighty-two thousand, five hundred fifteen".