68186397 has 4 divisors (see below), whose sum is σ = 90915200. Its totient is φ = 45457596.

The previous prime is 68186387. The next prime is 68186399. The reversal of 68186397 is 79368186.

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 not a de Polignac number, because 68186397 - 2⁴ = 68186381 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 (68186399) 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, 11364397 + ... + 11364402.

It is an arithmetic number, because the mean of its divisors is an integer number (22728800).

Almost surely, 2^68186397 is an apocalyptic number.

It is an amenable number.

68186397 is a deficient number, since it is larger than the sum of its proper divisors (22728803).

68186397 is a wasteful number, since it uses less digits than its factorization.

68186397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22728802.

The product of its digits is 435456, while the sum is 48.

The square root of 68186397 is about 8257.5054950027. The cubic root of 68186397 is about 408.5381151741.

It can be divided in two parts, 681 and 86397, that added together give a palindrome (87078).

The spelling of 68186397 in words is "sixty-eight million, one hundred eighty-six thousand, three hundred ninety-seven".