68478745 has 16 divisors (see below), whose sum is σ = 83884032. Its totient is φ = 53654400.

The previous prime is 68478743. The next prime is 68478769. The reversal of 68478745 is 54787486.

It is a happy number.

It is not a de Polignac number, because 68478745 - 2¹ = 68478743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68478743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58920 + ... + 60070.

It is an arithmetic number, because the mean of its divisors is an integer number (5242752).

Almost surely, 2^68478745 is an apocalyptic number.

It is an amenable number.

68478745 is a deficient number, since it is larger than the sum of its proper divisors (15405287).

68478745 is a wasteful number, since it uses less digits than its factorization.

68478745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392.

The product of its digits is 1505280, while the sum is 49.

The square root of 68478745 is about 8275.1885174901. The cubic root of 68478745 is about 409.1211494219.

The spelling of 68478745 in words is "sixty-eight million, four hundred seventy-eight thousand, seven hundred forty-five".