68497899 has 4 divisors (see below), whose sum is σ = 91330536. Its totient is φ = 45665264.

The previous prime is 68497883. The next prime is 68497903. The reversal of 68497899 is 99879486.

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

It is a cyclic number.

It is not a de Polignac number, because 68497899 - 2⁴ = 68497883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68497829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11416314 + ... + 11416319.

It is an arithmetic number, because the mean of its divisors is an integer number (22832634).

Almost surely, 2^68497899 is an apocalyptic number.

68497899 is a deficient number, since it is larger than the sum of its proper divisors (22832637).

68497899 is a wasteful number, since it uses less digits than its factorization.

68497899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22832636.

The product of its digits is 7838208, while the sum is 60.

The square root of 68497899 is about 8276.3457515983. The cubic root of 68497899 is about 409.1592905803.

It can be divided in two parts, 68497 and 899, that added together give a palindrome (69396).

The spelling of 68497899 in words is "sixty-eight million, four hundred ninety-seven thousand, eight hundred ninety-nine".