68921474 has 16 divisors (see below), whose sum is σ = 109118880. Its totient is φ = 32558400.

The previous prime is 68921467. The next prime is 68921483. The reversal of 68921474 is 47412986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12977 + ... + 17499.

It is an arithmetic number, because the mean of its divisors is an integer number (6819930).

Almost surely, 2^68921474 is an apocalyptic number.

68921474 is a deficient number, since it is larger than the sum of its proper divisors (40197406).

68921474 is a wasteful number, since it uses less digits than its factorization.

68921474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945.

The product of its digits is 96768, while the sum is 41.

The square root of 68921474 is about 8301.8958075852. The cubic root of 68921474 is about 410.0009399146. Note that the first 3 decimals are identical.

The spelling of 68921474 in words is "sixty-eight million, nine hundred twenty-one thousand, four hundred seventy-four".