68006807474 has 4 divisors (see below), whose sum is σ = 102010211214. Its totient is φ = 34003403736.

The previous prime is 68006807447. The next prime is 68006807513. The reversal of 68006807474 is 47470860086.

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

It can be written as a sum of positive squares in only one way, i.e., 35680565449 + 32326242025 = 188893^2 + 179795^2 .

It is a super-3 number, since 3×68006807474³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17001701867 + ... + 17001701870.

Almost surely, 2^68006807474 is an apocalyptic number.

68006807474 is a deficient number, since it is larger than the sum of its proper divisors (34003403740).

68006807474 is a wasteful number, since it uses less digits than its factorization.

68006807474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34003403739.

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 68006807474 in words is "sixty-eight billion, six million, eight hundred seven thousand, four hundred seventy-four".