67870056828 has 96 divisors (see below), whose sum is σ = 199965072384. Its totient is φ = 17457251328.

The previous prime is 67870056773. The next prime is 67870056829. The reversal of 67870056828 is 82865007876.

It is a happy number.

It is a super-2 number, since 2×67870056828² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67870056829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1000375 + ... + 1066062.

It is an arithmetic number, because the mean of its divisors is an integer number (2082969504).

Almost surely, 2^67870056828 is an apocalyptic number.

67870056828 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

67870056828 is an abundant number, since it is smaller than the sum of its proper divisors (132095015556).

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

67870056828 is a wasteful number, since it uses less digits than its factorization.

67870056828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066491 (or 2066489 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 67870056828 in words is "sixty-seven billion, eight hundred seventy million, fifty-six thousand, eight hundred twenty-eight".