68799740 has 12 divisors (see below), whose sum is σ = 144479496. Its totient is φ = 27519888.

The previous prime is 68799733. The next prime is 68799751. The reversal of 68799740 is 4799786.

It is a happy number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719974 + ... + 1720013.

It is an arithmetic number, because the mean of its divisors is an integer number (12039958).

Almost surely, 2^68799740 is an apocalyptic number.

It is an amenable number.

68799740 is an abundant number, since it is smaller than the sum of its proper divisors (75679756).

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

68799740 is a wasteful number, since it uses less digits than its factorization.

68799740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439996 (or 3439994 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 68799740 is about 8294.5608684246. The cubic root of 68799740 is about 409.7594067326.

The spelling of 68799740 in words is "sixty-eight million, seven hundred ninety-nine thousand, seven hundred forty".