68478823 has 24 divisors (see below), whose sum is σ = 82810512. Its totient is φ = 56415744.

The previous prime is 68478821. The next prime is 68478827. The reversal of 68478823 is 32887486.

It is not a de Polignac number, because 68478823 - 2¹ = 68478821 is a prime.

It is a Duffinian number.

Its product of digits (516096) is a multiple of the sum of its prime divisors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68478821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193815 + ... + 194167.

It is an arithmetic number, because the mean of its divisors is an integer number (3450438).

Almost surely, 2^68478823 is an apocalyptic number.

68478823 is a deficient number, since it is larger than the sum of its proper divisors (14331689).

68478823 is a wasteful number, since it uses less digits than its factorization.

68478823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 504 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 68478823 is about 8275.1932303723. The cubic root of 68478823 is about 409.1213047569.

It can be divided in two parts, 684 and 78823, that added together give a cube (79507 = 43³).

The spelling of 68478823 in words is "sixty-eight million, four hundred seventy-eight thousand, eight hundred twenty-three".