68472409 has 8 divisors (see below), whose sum is σ = 72390240. Its totient is φ = 64586016.

The previous prime is 68472407. The next prime is 68472421. The reversal of 68472409 is 90427486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68472409 - 2¹ = 68472407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68472401) 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, 3307 + ... + 12160.

It is an arithmetic number, because the mean of its divisors is an integer number (9048780).

Almost surely, 2^68472409 is an apocalyptic number.

It is an amenable number.

68472409 is a deficient number, since it is larger than the sum of its proper divisors (3917831).

68472409 is a wasteful number, since it uses less digits than its factorization.

68472409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15719.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 68472409 is about 8274.8056774767. The cubic root of 68472409 is about 409.1085310464.

The spelling of 68472409 in words is "sixty-eight million, four hundred seventy-two thousand, four hundred nine".