68958399 has 4 divisors (see below), whose sum is σ = 91944536. Its totient is φ = 45972264.

The previous prime is 68958371. The next prime is 68958401. The reversal of 68958399 is 99385986.

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

It is not a de Polignac number, because 68958399 - 2¹¹ = 68956351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68958349) 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, 11493064 + ... + 11493069.

It is an arithmetic number, because the mean of its divisors is an integer number (22986134).

Almost surely, 2^68958399 is an apocalyptic number.

68958399 is a deficient number, since it is larger than the sum of its proper divisors (22986137).

68958399 is a wasteful number, since it uses less digits than its factorization.

68958399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22986136.

The product of its digits is 4199040, while the sum is 57.

The square root of 68958399 is about 8304.1193994306. The cubic root of 68958399 is about 410.0741468121.

The spelling of 68958399 in words is "sixty-eight million, nine hundred fifty-eight thousand, three hundred ninety-nine".