67898989 has 8 divisors (see below), whose sum is σ = 72822240. Its totient is φ = 63110736.

The previous prime is 67898923. The next prime is 67899011. The reversal of 67898989 is 98989876.

67898989 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67898989 - 2⁷ = 67898861 is a prime.

It is a super-2 number, since 2×67898989² = 9220545414444242, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67898989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67898489) 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 in 7 ways as a sum of consecutive naturals, for example, 32707 + ... + 34720.

It is an arithmetic number, because the mean of its divisors is an integer number (9102780).

Almost surely, 2^67898989 is an apocalyptic number.

It is an amenable number.

67898989 is a deficient number, since it is larger than the sum of its proper divisors (4923251).

67898989 is a wasteful number, since it uses less digits than its factorization.

67898989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67499.

The product of its digits is 15676416, while the sum is 64.

The square root of 67898989 is about 8240.0842835495. The cubic root of 67898989 is about 407.9633060842.

The spelling of 67898989 in words is "sixty-seven million, eight hundred ninety-eight thousand, nine hundred eighty-nine".