68474016 has 72 divisors (see below), whose sum is σ = 209713140. Its totient is φ = 21067776.

The previous prime is 68473997. The next prime is 68474023. The reversal of 68474016 is 61047486.

It can be written as a sum of positive squares in 2 ways, for example, as 67174416 + 1299600 = 8196^2 + 1140^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5401 + ... + 12888.

Almost surely, 2^68474016 is an apocalyptic number.

It is an amenable number.

68474016 is an abundant number, since it is smaller than the sum of its proper divisors (141239124).

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

68474016 is a wasteful number, since it uses less digits than its factorization.

68474016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18318 (or 18307 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 68474016 is about 8274.9027788851. The cubic root of 68474016 is about 409.1117315193. Note that the first 3 decimals are identical.

The spelling of 68474016 in words is "sixty-eight million, four hundred seventy-four thousand, sixteen".