68198715 has 24 divisors (see below), whose sum is σ = 127305360. Its totient is φ = 33574464.

The previous prime is 68198707. The next prime is 68198723. The reversal of 68198715 is 51789186.

It is an interprime number because it is at equal distance from previous prime (68198707) and next prime (68198723).

It is not a de Polignac number, because 68198715 - 2³ = 68198707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57705 + ... + 58874.

It is an arithmetic number, because the mean of its divisors is an integer number (5304390).

Almost surely, 2^68198715 is an apocalyptic number.

68198715 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68198715 is a deficient number, since it is larger than the sum of its proper divisors (59106645).

68198715 is a wasteful number, since it uses less digits than its factorization.

68198715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116603 (or 116600 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 68198715 is about 8258.2513282171. The cubic root of 68198715 is about 408.5627147507.

The spelling of 68198715 in words is "sixty-eight million, one hundred ninety-eight thousand, seven hundred fifteen".