669001474 has 4 divisors (see below), whose sum is σ = 1003502214. Its totient is φ = 334500736.

The previous prime is 669001451. The next prime is 669001511. The reversal of 669001474 is 474100966.

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

It can be written as a sum of positive squares in only one way, i.e., 668998225 + 3249 = 25865^2 + 57^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167250367 + ... + 167250370.

Almost surely, 2^669001474 is an apocalyptic number.

669001474 is a deficient number, since it is larger than the sum of its proper divisors (334500740).

669001474 is a wasteful number, since it uses less digits than its factorization.

669001474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334500739.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 669001474 is about 25865.0628068056. The cubic root of 669001474 is about 874.5990975422.

The spelling of 669001474 in words is "six hundred sixty-nine million, one thousand, four hundred seventy-four".