688585714966 has 4 divisors (see below), whose sum is σ = 1032878572452. Its totient is φ = 344292857482.

The previous prime is 688585714951. The next prime is 688585715009. The reversal of 688585714966 is 669417585886.

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

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, 172146428740 + ... + 172146428743.

It is an arithmetic number, because the mean of its divisors is an integer number (258219643113).

Almost surely, 2^688585714966 is an apocalyptic number.

688585714966 is a deficient number, since it is larger than the sum of its proper divisors (344292857486).

688585714966 is a wasteful number, since it uses less digits than its factorization.

688585714966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344292857485.

The product of its digits is 696729600, while the sum is 73.

The spelling of 688585714966 in words is "six hundred eighty-eight billion, five hundred eighty-five million, seven hundred fourteen thousand, nine hundred sixty-six".