668038334 has 4 divisors (see below), whose sum is σ = 1002057504. Its totient is φ = 334019166.

The previous prime is 668038333. The next prime is 668038339. The reversal of 668038334 is 433830866.

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

It is a junction number, because it is equal to n+sod(n) for n = 668038291 and 668038300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668038333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167009582 + ... + 167009585.

It is an arithmetic number, because the mean of its divisors is an integer number (250514376).

Almost surely, 2^668038334 is an apocalyptic number.

668038334 is a deficient number, since it is larger than the sum of its proper divisors (334019170).

668038334 is a wasteful number, since it uses less digits than its factorization.

668038334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334019169.

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 668038334 is about 25846.4375494961. The cubic root of 668038334 is about 874.1791851945.

The spelling of 668038334 in words is "six hundred sixty-eight million, thirty-eight thousand, three hundred thirty-four".