68799790 has 16 divisors (see below), whose sum is σ = 124066800. Its totient is φ = 27469440.

The previous prime is 68799769. The next prime is 68799791. The reversal of 68799790 is 9799786.

It is a super-2 number, since 2×68799790² = 9466822208088200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68799791) 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, 315 + ... + 11734.

It is an arithmetic number, because the mean of its divisors is an integer number (7754175).

Almost surely, 2^68799790 is an apocalyptic number.

68799790 is a deficient number, since it is larger than the sum of its proper divisors (55267010).

68799790 is a wasteful number, since it uses less digits than its factorization.

68799790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12627.

The product of its (nonzero) digits is 1714608, while the sum is 55.

The square root of 68799790 is about 8294.5638824473. The cubic root of 68799790 is about 409.7595059963.

The spelling of 68799790 in words is "sixty-eight million, seven hundred ninety-nine thousand, seven hundred ninety".