68981472 has 72 divisors (see below), whose sum is σ = 224196336. Its totient is φ = 19708416.

The previous prime is 68981467. The next prime is 68981483. The reversal of 68981472 is 27418986.

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

It is a super-3 number, since 3×68981472³ (a number of 24 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 15093 + ... + 19124.

It is an arithmetic number, because the mean of its divisors is an integer number (3113838).

Almost surely, 2^68981472 is an apocalyptic number.

It is an amenable number.

68981472 is an abundant number, since it is smaller than the sum of its proper divisors (155214864).

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

68981472 is a wasteful number, since it uses less digits than its factorization.

68981472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34240 (or 34229 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 68981472 is about 8305.5085334975. The cubic root of 68981472 is about 410.1198776965.

The spelling of 68981472 in words is "sixty-eight million, nine hundred eighty-one thousand, four hundred seventy-two".