68702917 has 4 divisors (see below), whose sum is σ = 72318880. Its totient is φ = 65086956.

The previous prime is 68702911. The next prime is 68702947. The reversal of 68702917 is 71920786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68702917 - 2¹⁹ = 68178629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68702917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68702911) 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, 1807953 + ... + 1807990.

It is an arithmetic number, because the mean of its divisors is an integer number (18079720).

Almost surely, 2^68702917 is an apocalyptic number.

It is an amenable number.

68702917 is a deficient number, since it is larger than the sum of its proper divisors (3615963).

68702917 is a wasteful number, since it uses less digits than its factorization.

68702917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615962.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 68702917 is about 8288.7222778906. The cubic root of 68702917 is about 409.5670961174.

The spelling of 68702917 in words is "sixty-eight million, seven hundred two thousand, nine hundred seventeen".