67986990 has 48 divisors (see below), whose sum is σ = 177398208. Its totient is φ = 18065088.

The previous prime is 67986983. The next prime is 67987013. The reversal of 67986990 is 9968976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27339 + ... + 29721.

It is an arithmetic number, because the mean of its divisors is an integer number (3695796).

Almost surely, 2^67986990 is an apocalyptic number.

67986990 is an abundant number, since it is smaller than the sum of its proper divisors (109411218).

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

67986990 is a wasteful number, since it uses less digits than its factorization.

67986990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 67986990 is about 8245.4223663800. The cubic root of 67986990 is about 408.1394779761.

The spelling of 67986990 in words is "sixty-seven million, nine hundred eighty-six thousand, nine hundred ninety".