68472405 has 32 divisors (see below), whose sum is σ = 122094720. Its totient is φ = 36408960.

The previous prime is 68472401. The next prime is 68472407. The reversal of 68472405 is 50427486.

It is not a de Polignac number, because 68472405 - 2² = 68472401 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68472405.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 65769 + ... + 66801.

It is an arithmetic number, because the mean of its divisors is an integer number (3815460).

Almost surely, 2^68472405 is an apocalyptic number.

It is an amenable number.

68472405 is a deficient number, since it is larger than the sum of its proper divisors (53622315).

68472405 is a wasteful number, since it uses less digits than its factorization.

68472405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 68472405 is about 8274.8054357791. The cubic root of 68472405 is about 409.1085230800.

The spelling of 68472405 in words is "sixty-eight million, four hundred seventy-two thousand, four hundred five".