668583452 has 6 divisors (see below), whose sum is σ = 1170021048. Its totient is φ = 334291724.

The previous prime is 668583449. The next prime is 668583469. The reversal of 668583452 is 254385866.

It is a junction number, because it is equal to n+sod(n) for n = 668583397 and 668583406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83572928 + ... + 83572935.

It is an arithmetic number, because the mean of its divisors is an integer number (195003508).

Almost surely, 2^668583452 is an apocalyptic number.

It is an amenable number.

668583452 is a deficient number, since it is larger than the sum of its proper divisors (501437596).

668583452 is a wasteful number, since it uses less digits than its factorization.

668583452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167145867 (or 167145865 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 47.

The square root of 668583452 is about 25856.9807208808. The cubic root of 668583452 is about 874.4168967286.

The spelling of 668583452 in words is "six hundred sixty-eight million, five hundred eighty-three thousand, four hundred fifty-two".