68508474 has 8 divisors (see below), whose sum is σ = 137016960. Its totient is φ = 22836156.

The previous prime is 68508463. The next prime is 68508511. The reversal of 68508474 is 47480586.

It is a sphenic number, since it is the product of 3 distinct primes.

68508474 is an admirable number.

It is a super-2 number, since 2×68508474² = 9386822019617352, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5709034 + ... + 5709045.

It is an arithmetic number, because the mean of its divisors is an integer number (17127120).

Almost surely, 2^68508474 is an apocalyptic number.

68508474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68508474 is a wasteful number, since it uses less digits than its factorization.

68508474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11418084.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 68508474 is about 8276.9845958537. The cubic root of 68508474 is about 409.1803454200.

The spelling of 68508474 in words is "sixty-eight million, five hundred eight thousand, four hundred seventy-four".