67145256 has 96 divisors (see below), whose sum is σ = 190944000. Its totient is φ = 21288960.

The previous prime is 67145233. The next prime is 67145357. The reversal of 67145256 is 65254176.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 67145256.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149320 + ... + 149768.

It is an arithmetic number, because the mean of its divisors is an integer number (1989000).

Almost surely, 2^67145256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67145256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95472000).

67145256 is an abundant number, since it is smaller than the sum of its proper divisors (123798744).

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

67145256 is a wasteful number, since it uses less digits than its factorization.

67145256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 552 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 67145256 is about 8194.2208903593. The cubic root of 67145256 is about 406.4481127292.

The spelling of 67145256 in words is "sixty-seven million, one hundred forty-five thousand, two hundred fifty-six".