68924478 has 64 divisors (see below), whose sum is σ = 162777600. Its totient is φ = 19446336.

The previous prime is 68924473. The next prime is 68924489. The reversal of 68924478 is 87442986.

Its product of digits (774144) is a multiple of the sum of its prime divisors (432).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68924473) 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, 220050 + ... + 220362.

It is an arithmetic number, because the mean of its divisors is an integer number (2543400).

Almost surely, 2^68924478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68924478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81388800).

68924478 is an abundant number, since it is smaller than the sum of its proper divisors (93853122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68924478 is a wasteful number, since it uses less digits than its factorization.

68924478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 432 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 68924478 is about 8302.0767281446. The cubic root of 68924478 is about 410.0068965725.

The spelling of 68924478 in words is "sixty-eight million, nine hundred twenty-four thousand, four hundred seventy-eight".