668073104782 has 4 divisors (see below), whose sum is σ = 1002109657176. Its totient is φ = 334036552390.

The previous prime is 668073104749. The next prime is 668073104911. The reversal of 668073104782 is 287401370866.

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

It is a super-2 number, since 2×668073104782² (a number of 24 digits) contains 22 as substring.

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, 167018276194 + ... + 167018276197.

It is an arithmetic number, because the mean of its divisors is an integer number (250527414294).

Almost surely, 2^668073104782 is an apocalyptic number.

668073104782 is a deficient number, since it is larger than the sum of its proper divisors (334036552394).

668073104782 is a wasteful number, since it uses less digits than its factorization.

668073104782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334036552393.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 668073104782 in words is "six hundred sixty-eight billion, seventy-three million, one hundred four thousand, seven hundred eighty-two".