68658329 has 4 divisors (see below), whose sum is σ = 68705280. Its totient is φ = 68611380.

The previous prime is 68658323. The next prime is 68658353. The reversal of 68658329 is 92385686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92385686 = 2 ⋅46192843.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68658329 is a prime.

It is a super-2 number, since 2×68658329² = 9427932282144482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68658323) 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, 21209 + ... + 24230.

It is an arithmetic number, because the mean of its divisors is an integer number (17176320).

Almost surely, 2^68658329 is an apocalyptic number.

It is an amenable number.

68658329 is a deficient number, since it is larger than the sum of its proper divisors (46951).

68658329 is a wasteful number, since it uses less digits than its factorization.

68658329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46950.

The product of its digits is 622080, while the sum is 47.

The square root of 68658329 is about 8286.0321626216. The cubic root of 68658329 is about 409.4784743116.

The spelling of 68658329 in words is "sixty-eight million, six hundred fifty-eight thousand, three hundred twenty-nine".