68645878 has 32 divisors (see below), whose sum is σ = 122299200. Its totient is φ = 28283904.

The previous prime is 68645861. The next prime is 68645887. The reversal of 68645878 is 87854686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45358 + ... + 46846.

It is an arithmetic number, because the mean of its divisors is an integer number (3821850).

Almost surely, 2^68645878 is an apocalyptic number.

68645878 is a deficient number, since it is larger than the sum of its proper divisors (53653322).

68645878 is a wasteful number, since it uses less digits than its factorization.

68645878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

The product of its digits is 2580480, while the sum is 52.

The square root of 68645878 is about 8285.2808039318. The cubic root of 68645878 is about 409.4537202150.

It can be divided in two parts, 686 and 45878, that added together give a palindrome (46564).

The spelling of 68645878 in words is "sixty-eight million, six hundred forty-five thousand, eight hundred seventy-eight".