67996986 has 16 divisors (see below), whose sum is σ = 138560544. Its totient is φ = 22237904.

The previous prime is 67996963. The next prime is 67996997. The reversal of 67996986 is 68969976.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106596 + ... + 107231.

It is an arithmetic number, because the mean of its divisors is an integer number (8660034).

Almost surely, 2^67996986 is an apocalyptic number.

67996986 is an abundant number, since it is smaller than the sum of its proper divisors (70563558).

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

67996986 is a wasteful number, since it uses less digits than its factorization.

67996986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213885.

The product of its digits is 8817984, while the sum is 60.

The square root of 67996986 is about 8246.0284986168. The cubic root of 67996986 is about 408.1594796573.

The spelling of 67996986 in words is "sixty-seven million, nine hundred ninety-six thousand, nine hundred eighty-six".