669994241 has 8 divisors (see below), whose sum is σ = 767487744. Its totient is φ = 572945760.

The previous prime is 669994183. The next prime is 669994313. The reversal of 669994241 is 142499966.

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

It is a cyclic number.

It is not a de Polignac number, because 669994241 - 2¹⁴ = 669977857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 669994241.

It is not an unprimeable number, because it can be changed into a prime (669990241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108020 + ... + 114053.

It is an arithmetic number, because the mean of its divisors is an integer number (95935968).

Almost surely, 2^669994241 is an apocalyptic number.

It is an amenable number.

669994241 is a deficient number, since it is larger than the sum of its proper divisors (97493503).

669994241 is a wasteful number, since it uses less digits than its factorization.

669994241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222511.

The product of its digits is 839808, while the sum is 50.

The square root of 669994241 is about 25884.2469660603. The cubic root of 669994241 is about 875.0315051513.

The spelling of 669994241 in words is "six hundred sixty-nine million, nine hundred ninety-four thousand, two hundred forty-one".