68120390 has 32 divisors (see below), whose sum is σ = 134870400. Its totient is φ = 24614784.

The previous prime is 68120383. The next prime is 68120431. The reversal of 68120390 is 9302186.

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 15 ways as a sum of consecutive naturals, for example, 536 + ... + 11684.

It is an arithmetic number, because the mean of its divisors is an integer number (4214700).

Almost surely, 2^68120390 is an apocalyptic number.

68120390 is a deficient number, since it is larger than the sum of its proper divisors (66750010).

68120390 is a wasteful number, since it uses less digits than its factorization.

68120390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11216.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 68120390 is about 8253.5077391373. The cubic root of 68120390 is about 408.4062458535.

The spelling of 68120390 in words is "sixty-eight million, one hundred twenty thousand, three hundred ninety".