67889487 has 16 divisors (see below), whose sum is σ = 93476960. Its totient is φ = 43794432.

The previous prime is 67889429. The next prime is 67889513. The reversal of 67889487 is 78498876.

It is not a de Polignac number, because 67889487 - 2⁷ = 67889359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67885487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19839 + ... + 23007.

It is an arithmetic number, because the mean of its divisors is an integer number (5842310).

Almost surely, 2^67889487 is an apocalyptic number.

67889487 is a deficient number, since it is larger than the sum of its proper divisors (25587473).

67889487 is a wasteful number, since it uses less digits than its factorization.

67889487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402.

The product of its digits is 5419008, while the sum is 57.

The square root of 67889487 is about 8239.5076916039. The cubic root of 67889487 is about 407.9442746365.

The spelling of 67889487 in words is "sixty-seven million, eight hundred eighty-nine thousand, four hundred eighty-seven".