68746829 has 4 divisors (see below), whose sum is σ = 68833884. Its totient is φ = 68659776.

The previous prime is 68746823. The next prime is 68746837. The reversal of 68746829 is 92864786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11744329 + 57002500 = 3427^2 + 7550^2 .

It is a cyclic number.

It is not a de Polignac number, because 68746829 - 2²⁴ = 51969613 is a prime.

It is a super-2 number, since 2×68746829² = 9452252995110482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68746823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42332 + ... + 43925.

It is an arithmetic number, because the mean of its divisors is an integer number (17208471).

Almost surely, 2^68746829 is an apocalyptic number.

It is an amenable number.

68746829 is a deficient number, since it is larger than the sum of its proper divisors (87055).

68746829 is an equidigital number, since it uses as much as digits as its factorization.

68746829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87054.

The product of its digits is 1161216, while the sum is 50.

The square root of 68746829 is about 8291.3707551888. The cubic root of 68746829 is about 409.6543368574.

The spelling of 68746829 in words is "sixty-eight million, seven hundred forty-six thousand, eight hundred twenty-nine".