669094735 has 4 divisors (see below), whose sum is σ = 802913688. Its totient is φ = 535275784.

The previous prime is 669094697. The next prime is 669094799. The reversal of 669094735 is 537490966.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 669094735 - 2¹⁹ = 668570447 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 66909469 + ... + 66909478.

It is an arithmetic number, because the mean of its divisors is an integer number (200728422).

Almost surely, 2^669094735 is an apocalyptic number.

669094735 is a deficient number, since it is larger than the sum of its proper divisors (133818953).

669094735 is a wasteful number, since it uses less digits than its factorization.

669094735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133818952.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The square root of 669094735 is about 25866.8655812798. The cubic root of 669094735 is about 874.6397363149.

The spelling of 669094735 in words is "six hundred sixty-nine million, ninety-four thousand, seven hundred thirty-five".