669370248 has 24 divisors (see below), whose sum is σ = 1812877950. Its totient is φ = 223123392.

The previous prime is 669370241. The next prime is 669370253. The reversal of 669370248 is 842073966.

It can be written as a sum of positive squares in only one way, i.e., 576864324 + 92505924 = 24018^2 + 9618^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (669370241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4648333 + ... + 4648476.

Almost surely, 2^669370248 is an apocalyptic number.

It is an amenable number.

669370248 is an abundant number, since it is smaller than the sum of its proper divisors (1143507702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669370248 is a wasteful number, since it uses less digits than its factorization.

669370248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9296821 (or 9296814 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 669370248 is about 25872.1906300955. The cubic root of 669370248 is about 874.7597699151.

The spelling of 669370248 in words is "six hundred sixty-nine million, three hundred seventy thousand, two hundred forty-eight".