68198677 has 4 divisors (see below), whose sum is σ = 68329600. Its totient is φ = 68067756.

The previous prime is 68198639. The next prime is 68198707. The reversal of 68198677 is 77689186.

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 a de Polignac number, because none of the positive numbers 2^k-68198677 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 (68198617) 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, 64677 + ... + 65722.

It is an arithmetic number, because the mean of its divisors is an integer number (17082400).

Almost surely, 2^68198677 is an apocalyptic number.

It is an amenable number.

68198677 is a deficient number, since it is larger than the sum of its proper divisors (130923).

68198677 is a wasteful number, since it uses less digits than its factorization.

68198677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130922.

The product of its digits is 1016064, while the sum is 52.

The square root of 68198677 is about 8258.2490274876. The cubic root of 68198677 is about 408.5626388677.

The spelling of 68198677 in words is "sixty-eight million, one hundred ninety-eight thousand, six hundred seventy-seven".