68490278 has 8 divisors (see below), whose sum is σ = 103416240. Its totient is φ = 34018200.

The previous prime is 68490277. The next prime is 68490287. The reversal of 68490278 is 87209486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68490277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113093 + ... + 113696.

It is an arithmetic number, because the mean of its divisors is an integer number (12927030).

Almost surely, 2^68490278 is an apocalyptic number.

68490278 is a deficient number, since it is larger than the sum of its proper divisors (34925962).

68490278 is a wasteful number, since it uses less digits than its factorization.

68490278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226942.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 68490278 is about 8275.8853302834. The cubic root of 68490278 is about 409.1441158151.

The spelling of 68490278 in words is "sixty-eight million, four hundred ninety thousand, two hundred seventy-eight".