68198415 has 16 divisors (see below), whose sum is σ = 109219968. Its totient is φ = 36338336.

The previous prime is 68198413. The next prime is 68198443. The reversal of 68198415 is 51489186.

It is a cyclic number.

It is not a de Polignac number, because 68198415 - 2¹ = 68198413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68198413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29284 + ... + 31526.

It is an arithmetic number, because the mean of its divisors is an integer number (6826248).

Almost surely, 2^68198415 is an apocalyptic number.

68198415 is a deficient number, since it is larger than the sum of its proper divisors (41021553).

68198415 is a wasteful number, since it uses less digits than its factorization.

68198415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278.

The product of its digits is 69120, while the sum is 42.

The square root of 68198415 is about 8258.2331645455. The cubic root of 68198415 is about 408.5621156730.

The spelling of 68198415 in words is "sixty-eight million, one hundred ninety-eight thousand, four hundred fifteen".