68243790 has 16 divisors (see below), whose sum is σ = 163785168. Its totient is φ = 18198336.

The previous prime is 68243789. The next prime is 68243837. The reversal of 68243790 is 9734286.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137367 + ... + 1137426.

It is an arithmetic number, because the mean of its divisors is an integer number (10236573).

Almost surely, 2^68243790 is an apocalyptic number.

68243790 is an abundant number, since it is smaller than the sum of its proper divisors (95541378).

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

68243790 is a wasteful number, since it uses less digits than its factorization.

68243790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274803.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 68243790 is about 8260.9799660815. The cubic root of 68243790 is about 408.6527062244.

The spelling of 68243790 in words is "sixty-eight million, two hundred forty-three thousand, seven hundred ninety".