68407472 has 20 divisors (see below), whose sum is σ = 151473936. Its totient is φ = 29317440.

The previous prime is 68407463. The next prime is 68407481. The reversal of 68407472 is 27470486.

It is an interprime number because it is at equal distance from previous prime (68407463) and next prime (68407481).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305279 + ... + 305502.

Almost surely, 2^68407472 is an apocalyptic number.

It is an amenable number.

68407472 is an abundant number, since it is smaller than the sum of its proper divisors (83066464).

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

68407472 is a wasteful number, since it uses less digits than its factorization.

68407472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610796 (or 610790 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 68407472 is about 8270.8809687965. The cubic root of 68407472 is about 408.9791617442.

The spelling of 68407472 in words is "sixty-eight million, four hundred seven thousand, four hundred seventy-two".