68259290 has 32 divisors (see below), whose sum is σ = 134447040. Its totient is φ = 24745600.

The previous prime is 68259287. The next prime is 68259341. The reversal of 68259290 is 9295286.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45350 + ... + 46830.

It is an arithmetic number, because the mean of its divisors is an integer number (4201470).

Almost surely, 2^68259290 is an apocalyptic number.

68259290 is a deficient number, since it is larger than the sum of its proper divisors (66187750).

68259290 is a wasteful number, since it uses less digits than its factorization.

68259290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 68259290 is about 8261.9180581751. The cubic root of 68259290 is about 408.6836425556.

The spelling of 68259290 in words is "sixty-eight million, two hundred fifty-nine thousand, two hundred ninety".