68416290 has 48 divisors (see below), whose sum is σ = 182230776. Its totient is φ = 17798400.

The previous prime is 68416267. The next prime is 68416301. The reversal of 68416290 is 9261486.

It can be written as a sum of positive squares in 4 ways, for example, as 35892081 + 32524209 = 5991^2 + 5703^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5581 + ... + 12960.

Almost surely, 2^68416290 is an apocalyptic number.

68416290 is an abundant number, since it is smaller than the sum of its proper divisors (113814486).

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

68416290 is a wasteful number, since it uses less digits than its factorization.

68416290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18595 (or 18592 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 68416290 is about 8271.4140266341. The cubic root of 68416290 is about 408.9967340123.

It can be divided in two parts, 6841 and 6290, that added together give a palindrome (13131).

The spelling of 68416290 in words is "sixty-eight million, four hundred sixteen thousand, two hundred ninety".