68880399 has 16 divisors (see below), whose sum is σ = 105142272. Its totient is φ = 39292128.

The previous prime is 68880397. The next prime is 68880401. The reversal of 68880399 is 99308886.

It is an interprime number because it is at equal distance from previous prime (68880397) and next prime (68880401).

It is not a de Polignac number, because 68880399 - 2¹ = 68880397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68880397) 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, 11202 + ... + 16224.

It is an arithmetic number, because the mean of its divisors is an integer number (6571392).

Almost surely, 2^68880399 is an apocalyptic number.

68880399 is a deficient number, since it is larger than the sum of its proper divisors (36261873).

68880399 is a wasteful number, since it uses less digits than its factorization.

68880399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5686.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 68880399 is about 8299.4216063531. The cubic root of 68880399 is about 409.9194745683.

The spelling of 68880399 in words is "sixty-eight million, eight hundred eighty thousand, three hundred ninety-nine".