68457972 has 24 divisors (see below), whose sum is σ = 174256992. Its totient is φ = 20744800.

The previous prime is 68457971. The next prime is 68457973. The reversal of 68457972 is 27975486.

It is an interprime number because it is at equal distance from previous prime (68457971) and next prime (68457973).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68457971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259179 + ... + 259442.

It is an arithmetic number, because the mean of its divisors is an integer number (7260708).

Almost surely, 2^68457972 is an apocalyptic number.

It is an amenable number.

68457972 is an abundant number, since it is smaller than the sum of its proper divisors (105799020).

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

68457972 is a wasteful number, since it uses less digits than its factorization.

68457972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518639 (or 518637 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 68457972 is about 8273.9332847202. The cubic root of 68457972 is about 409.0797763255.

The spelling of 68457972 in words is "sixty-eight million, four hundred fifty-seven thousand, nine hundred seventy-two".