68297730 has 16 divisors (see below), whose sum is σ = 163914624. Its totient is φ = 18212720.

The previous prime is 68297711. The next prime is 68297737. The reversal of 68297730 is 3779286.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68297737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1138266 + ... + 1138325.

It is an arithmetic number, because the mean of its divisors is an integer number (10244664).

Almost surely, 2^68297730 is an apocalyptic number.

68297730 is an abundant number, since it is smaller than the sum of its proper divisors (95616894).

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

68297730 is a wasteful number, since it uses less digits than its factorization.

68297730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276601.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 68297730 is about 8264.2440670638. The cubic root of 68297730 is about 408.7603444529.

The spelling of 68297730 in words is "sixty-eight million, two hundred ninety-seven thousand, seven hundred thirty".