68471290 has 16 divisors (see below), whose sum is σ = 123877512. Its totient is φ = 27248704.

The previous prime is 68471287. The next prime is 68471297. The reversal of 68471290 is 9217486.

It can be written as a sum of positive squares in 4 ways, for example, as 63313849 + 5157441 = 7957^2 + 2271^2 .

It is not an unprimeable number, because it can be changed into a prime (68471297) 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, 15409 + ... + 19348.

Almost surely, 2^68471290 is an apocalyptic number.

68471290 is a deficient number, since it is larger than the sum of its proper divisors (55406222).

68471290 is a wasteful number, since it uses less digits than its factorization.

68471290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34961.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 68471290 is about 8274.7380623196. The cubic root of 68471290 is about 409.1063024361.

The spelling of 68471290 in words is "sixty-eight million, four hundred seventy-one thousand, two hundred ninety".