68787829 has 16 divisors (see below), whose sum is σ = 76602240. Its totient is φ = 61248960.

The previous prime is 68787781. The next prime is 68787857. The reversal of 68787829 is 92878786.

It is a cyclic number.

It is not a de Polignac number, because 68787829 - 2⁷ = 68787701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68787829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68787529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123219 + ... + 123775.

It is an arithmetic number, because the mean of its divisors is an integer number (4787640).

Almost surely, 2^68787829 is an apocalyptic number.

It is an amenable number.

68787829 is a deficient number, since it is larger than the sum of its proper divisors (7814411).

68787829 is a wasteful number, since it uses less digits than its factorization.

68787829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its digits is 2709504, while the sum is 55.

The square root of 68787829 is about 8293.8428367072. The cubic root of 68787829 is about 409.7357587460.

The spelling of 68787829 in words is "sixty-eight million, seven hundred eighty-seven thousand, eight hundred twenty-nine".