68214978 has 96 divisors (see below), whose sum is σ = 170788800. Its totient is φ = 19502208.

The previous prime is 68214977. The next prime is 68215009. The reversal of 68214978 is 87941286.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (193536) is a multiple of the sum of its prime factors (336).

It is not an unprimeable number, because it can be changed into a prime (68214977) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 297768 + ... + 297996.

It is an arithmetic number, because the mean of its divisors is an integer number (1779050).

Almost surely, 2^68214978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68214978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85394400).

68214978 is an abundant number, since it is smaller than the sum of its proper divisors (102573822).

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

68214978 is a wasteful number, since it uses less digits than its factorization.

68214978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 333 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 68214978 is about 8259.2359210765. The cubic root of 68214978 is about 408.5951881258.

The spelling of 68214978 in words is "sixty-eight million, two hundred fourteen thousand, nine hundred seventy-eight".