68774478 has 16 divisors (see below), whose sum is σ = 138426960. Its totient is φ = 22778496.

The previous prime is 68774467. The next prime is 68774479. The reversal of 68774478 is 87447786.

It is a self number, because there is not a number n which added to its sum of digits gives 68774478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68774479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35563 + ... + 37446.

It is an arithmetic number, because the mean of its divisors is an integer number (8651685).

Almost surely, 2^68774478 is an apocalyptic number.

68774478 is an abundant number, since it is smaller than the sum of its proper divisors (69652482).

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

68774478 is a wasteful number, since it uses less digits than its factorization.

68774478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73171.

The product of its digits is 2107392, while the sum is 51.

The square root of 68774478 is about 8293.0379234633. The cubic root of 68774478 is about 409.7092485521.

The spelling of 68774478 in words is "sixty-eight million, seven hundred seventy-four thousand, four hundred seventy-eight".