67989802 has 4 divisors (see below), whose sum is σ = 101984706. Its totient is φ = 33994900.

The previous prime is 67989787. The next prime is 67989821. The reversal of 67989802 is 20898976.

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., 63824121 + 4165681 = 7989^2 + 2041^2 .

It is a super-2 number, since 2×67989802² = 9245226351998408, which contains 22 as substring.

It is an unprimeable number.

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, 16997449 + ... + 16997452.

Almost surely, 2^67989802 is an apocalyptic number.

67989802 is a deficient number, since it is larger than the sum of its proper divisors (33994904).

67989802 is a wasteful number, since it uses less digits than its factorization.

67989802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33994903.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 67989802 is about 8245.5928834742. The cubic root of 67989802 is about 408.1451048977.

The spelling of 67989802 in words is "sixty-seven million, nine hundred eighty-nine thousand, eight hundred two".