68187806 has 4 divisors (see below), whose sum is σ = 102281712. Its totient is φ = 34093902.

The previous prime is 68187773. The next prime is 68187841. The reversal of 68187806 is 60878186.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×68187806³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17046950 + ... + 17046953.

It is an arithmetic number, because the mean of its divisors is an integer number (25570428).

Almost surely, 2^68187806 is an apocalyptic number.

68187806 is a deficient number, since it is larger than the sum of its proper divisors (34093906).

68187806 is a wasteful number, since it uses less digits than its factorization.

68187806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34093905.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 68187806 is about 8257.5908108842. The cubic root of 68187806 is about 408.5409291578.

The spelling of 68187806 in words is "sixty-eight million, one hundred eighty-seven thousand, eight hundred six".