67740986 has 4 divisors (see below), whose sum is σ = 101611482. Its totient is φ = 33870492.

The previous prime is 67740977. The next prime is 67740989. The reversal of 67740986 is 68904776.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 37149025 + 30591961 = 6095^2 + 5531^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67740986.

It is not an unprimeable number, because it can be changed into a prime (67740989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16935245 + ... + 16935248.

Almost surely, 2^67740986 is an apocalyptic number.

67740986 is a deficient number, since it is larger than the sum of its proper divisors (33870496).

67740986 is a wasteful number, since it uses less digits than its factorization.

67740986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33870495.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 67740986 is about 8230.4912368582. The cubic root of 67740986 is about 407.6466126566.

The spelling of 67740986 in words is "sixty-seven million, seven hundred forty thousand, nine hundred eighty-six".