68473920 has 56 divisors (see below), whose sum is σ = 217407744. Its totient is φ = 18259456.

The previous prime is 68473913. The next prime is 68473957. The reversal of 68473920 is 2937486.

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, 34704 + ... + 36623.

Almost surely, 2^68473920 is an apocalyptic number.

68473920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68473920 is an abundant number, since it is smaller than the sum of its proper divisors (148933824).

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

68473920 is a wasteful number, since it uses less digits than its factorization.

68473920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71347 (or 71337 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 68473920 is about 8274.8969782107. The cubic root of 68473920 is about 409.1115403288. Note that the first 3 decimals are identical.

The spelling of 68473920 in words is "sixty-eight million, four hundred seventy-three thousand, nine hundred twenty".