67861860 has 96 divisors (see below), whose sum is σ = 208656000. Its totient is φ = 16343040.

The previous prime is 67861817. The next prime is 67861867. The reversal of 67861860 is 6816876.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (67861867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150916 + ... + 151364.

It is an arithmetic number, because the mean of its divisors is an integer number (2173500).

Almost surely, 2^67861860 is an apocalyptic number.

67861860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67861860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104328000).

67861860 is an abundant number, since it is smaller than the sum of its proper divisors (140794140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67861860 is a wasteful number, since it uses less digits than its factorization.

67861860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 67861860 is about 8237.8310252153. The cubic root of 67861860 is about 407.8889307431. Note that the first 3 decimals are identical.

It can be divided in two parts, 6786 and 1860, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 67861860 in words is "sixty-seven million, eight hundred sixty-one thousand, eight hundred sixty".