669343415 has 16 divisors (see below), whose sum is σ = 866321568. Its totient is φ = 493527936.

The previous prime is 669343391. The next prime is 669343459. The reversal of 669343415 is 514343966.

It is a cyclic number.

It is not a de Polignac number, because 669343415 - 2²⁸ = 400907959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36857 + ... + 51933.

It is an arithmetic number, because the mean of its divisors is an integer number (54145098).

Almost surely, 2^669343415 is an apocalyptic number.

669343415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

669343415 is a deficient number, since it is larger than the sum of its proper divisors (196978153).

669343415 is a wasteful number, since it uses less digits than its factorization.

669343415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15778.

The product of its digits is 233280, while the sum is 41.

The square root of 669343415 is about 25871.6720565177. The cubic root of 669343415 is about 874.7480809470.

The spelling of 669343415 in words is "six hundred sixty-nine million, three hundred forty-three thousand, four hundred fifteen".