668119104 has 105 divisors (see below), whose sum is σ = 1986046447. Its totient is φ = 222086016.

The previous prime is 668119073. The next prime is 668119163. The reversal of 668119104 is 401911866.

It is a happy number.

The square root of 668119104 is 25848.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1860877 + ... + 1861235.

Almost surely, 2^668119104 is an apocalyptic number.

668119104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

668119104 is the 25848-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668119104

668119104 is an abundant number, since it is smaller than the sum of its proper divisors (1317927343).

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

668119104 is an frugal number, since it uses more digits than its factorization.

668119104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The cubic root of 668119104 is about 874.2144150128.

Multiplying 668119104 by its sum of digits (36), we get a square (24052287744 = 155088²).

668119104 divided by its sum of digits (36) gives a square (18558864 = 4308²).

The spelling of 668119104 in words is "six hundred sixty-eight million, one hundred nineteen thousand, one hundred four".