68910408 has 48 divisors (see below), whose sum is σ = 213295680. Its totient is φ = 19688544.

The previous prime is 68910337. The next prime is 68910421. The reversal of 68910408 is 80401986.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67860 + ... + 68867.

It is an arithmetic number, because the mean of its divisors is an integer number (4443660).

Almost surely, 2^68910408 is an apocalyptic number.

It is an amenable number.

68910408 is an abundant number, since it is smaller than the sum of its proper divisors (144385272).

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

68910408 is a wasteful number, since it uses less digits than its factorization.

68910408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136746 (or 136739 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 68910408 is about 8301.2293065545. The cubic root of 68910408 is about 409.9789955529.

The spelling of 68910408 in words is "sixty-eight million, nine hundred ten thousand, four hundred eight".