669847371 has 16 divisors (see below), whose sum is σ = 926739744. Its totient is φ = 430009344.

The previous prime is 669847369. The next prime is 669847393. The reversal of 669847371 is 173748966.

It is not a de Polignac number, because 669847371 - 2¹ = 669847369 is a prime.

It is a super-2 number, since 2×669847371² = 897391000871223282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (669847361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20340 + ... + 41873.

It is an arithmetic number, because the mean of its divisors is an integer number (57921234).

Almost surely, 2^669847371 is an apocalyptic number.

669847371 is a deficient number, since it is larger than the sum of its proper divisors (256892373).

669847371 is a wasteful number, since it uses less digits than its factorization.

669847371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62350.

The product of its digits is 1524096, while the sum is 51.

The square root of 669847371 is about 25881.4097568119. The cubic root of 669847371 is about 874.9675616818.

The spelling of 669847371 in words is "six hundred sixty-nine million, eight hundred forty-seven thousand, three hundred seventy-one".