68187996 has 36 divisors (see below), whose sum is σ = 175195384. Its totient is φ = 22356000.

The previous prime is 68187991. The next prime is 68188007. The reversal of 68187996 is 69978186.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68187991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13330 + ... + 17721.

Almost surely, 2^68187996 is an apocalyptic number.

It is an amenable number.

68187996 is an abundant number, since it is smaller than the sum of its proper divisors (107007388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68187996 is a wasteful number, since it uses less digits than its factorization.

68187996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31122 (or 31117 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 68187996 is about 8257.6023154424. The cubic root of 68187996 is about 408.5413086133.

The spelling of 68187996 in words is "sixty-eight million, one hundred eighty-seven thousand, nine hundred ninety-six".