68207399 has 4 divisors (see below), whose sum is σ = 73454136. Its totient is φ = 62960664.

The previous prime is 68207369. The next prime is 68207401. The reversal of 68207399 is 99370286.

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

It is not a de Polignac number, because 68207399 - 2⁸ = 68207143 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 (68207329) 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, 2623349 + ... + 2623374.

It is an arithmetic number, because the mean of its divisors is an integer number (18363534).

Almost surely, 2^68207399 is an apocalyptic number.

68207399 is a deficient number, since it is larger than the sum of its proper divisors (5246737).

68207399 is a wasteful number, since it uses less digits than its factorization.

68207399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246736.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 68207399 is about 8258.7770886494. Note that the first 3 decimals coincide. The cubic root of 68207399 is about 408.5800552927.

The spelling of 68207399 in words is "sixty-eight million, two hundred seven thousand, three hundred ninety-nine".