668292832 has 24 divisors (see below), whose sum is σ = 1325753352. Its totient is φ = 331593600.

The previous prime is 668292817. The next prime is 668292839. The reversal of 668292832 is 238292866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668292839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75519 + ... + 83902.

It is an arithmetic number, because the mean of its divisors is an integer number (55239723).

Almost surely, 2^668292832 is an apocalyptic number.

It is an amenable number.

668292832 is a deficient number, since it is larger than the sum of its proper divisors (657460520).

668292832 is a wasteful number, since it uses less digits than its factorization.

668292832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159562 (or 159554 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 668292832 is about 25851.3603510531. The cubic root of 668292832 is about 874.2901811244.

It can be divided in two parts, 668292 and 832, that added together give a square (669124 = 818²).

The spelling of 668292832 in words is "six hundred sixty-eight million, two hundred ninety-two thousand, eight hundred thirty-two".