67061816 has 8 divisors (see below), whose sum is σ = 125740920. Its totient is φ = 33530904.

The previous prime is 67061791. The next prime is 67061831. The reversal of 67061816 is 61816076.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4191356 + ... + 4191371.

It is an arithmetic number, because the mean of its divisors is an integer number (15717615).

Almost surely, 2^67061816 is an apocalyptic number.

It is an amenable number.

67061816 is a deficient number, since it is larger than the sum of its proper divisors (58679104).

67061816 is a wasteful number, since it uses less digits than its factorization.

67061816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8382733 (or 8382729 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 67061816 is about 8189.1279144974. The cubic root of 67061816 is about 406.2796814290.

The spelling of 67061816 in words is "sixty-seven million, sixty-one thousand, eight hundred sixteen".