68495290 has 16 divisors (see below), whose sum is σ = 124678440. Its totient is φ = 27089920.

The previous prime is 68495281. The next prime is 68495293. The reversal of 68495290 is 9259486.

It can be written as a sum of positive squares in 4 ways, for example, as 27008809 + 41486481 = 5197^2 + 6441^2 .

It is not an unprimeable number, because it can be changed into a prime (68495293) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 37591 + ... + 39370.

Almost surely, 2^68495290 is an apocalyptic number.

68495290 is a deficient number, since it is larger than the sum of its proper divisors (56183150).

68495290 is a wasteful number, since it uses less digits than its factorization.

68495290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77057.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 68495290 is about 8276.1881322261. The cubic root of 68495290 is about 409.1540957244.

The spelling of 68495290 in words is "sixty-eight million, four hundred ninety-five thousand, two hundred ninety".