67989951 has 12 divisors (see below), whose sum is σ = 98457840. Its totient is φ = 45211200.

The previous prime is 67989907. The next prime is 67989959. The reversal of 67989951 is 15998976.

It is not a de Polignac number, because 67989951 - 2¹⁴ = 67973567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67989959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5811 + ... + 13028.

It is an arithmetic number, because the mean of its divisors is an integer number (8204820).

Almost surely, 2^67989951 is an apocalyptic number.

67989951 is a deficient number, since it is larger than the sum of its proper divisors (30467889).

67989951 is a wasteful number, since it uses less digits than its factorization.

67989951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19246 (or 19243 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 67989951 is about 8245.6019185988. The cubic root of 67989951 is about 408.1454030482.

The spelling of 67989951 in words is "sixty-seven million, nine hundred eighty-nine thousand, nine hundred fifty-one".