68629399 has 8 divisors (see below), whose sum is σ = 71701920. Its totient is φ = 65604000.

The previous prime is 68629321. The next prime is 68629411. The reversal of 68629399 is 99392686.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68629399 - 2²¹ = 66532247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68629199) 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, 8787 + ... + 14644.

It is an arithmetic number, because the mean of its divisors is an integer number (8962740).

Almost surely, 2^68629399 is an apocalyptic number.

68629399 is a deficient number, since it is larger than the sum of its proper divisors (3072521).

68629399 is a wasteful number, since it uses less digits than its factorization.

68629399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23561.

The product of its digits is 1259712, while the sum is 52.

The square root of 68629399 is about 8284.2862698002. The cubic root of 68629399 is about 409.4209533637.

It can be divided in two parts, 6862 and 9399, that added together give a palindrome (16261).

The spelling of 68629399 in words is "sixty-eight million, six hundred twenty-nine thousand, three hundred ninety-nine".