669730606394 has 8 divisors (see below), whose sum is σ = 1006120336320. Its totient is φ = 334357160956.

The previous prime is 669730606393. The next prime is 669730606397. The reversal of 669730606394 is 493606037966.

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

It is not an unprimeable number, because it can be changed into a prime (669730606393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254069474 + ... + 254072109.

It is an arithmetic number, because the mean of its divisors is an integer number (125765042040).

Almost surely, 2^669730606394 is an apocalyptic number.

669730606394 is a deficient number, since it is larger than the sum of its proper divisors (336389729926).

669730606394 is a wasteful number, since it uses less digits than its factorization.

669730606394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508142244.

The product of its (nonzero) digits is 26453952, while the sum is 59.

The spelling of 669730606394 in words is "six hundred sixty-nine billion, seven hundred thirty million, six hundred six thousand, three hundred ninety-four".