67369840 has 40 divisors (see below), whose sum is σ = 158985360. Its totient is φ = 26543616.

The previous prime is 67369831. The next prime is 67369843. The reversal of 67369840 is 4896376.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67369843) 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 7 ways as a sum of consecutive naturals, for example, 925 + ... + 11644.

It is an arithmetic number, because the mean of its divisors is an integer number (3974634).

Almost surely, 2^67369840 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 67369840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79492680).

67369840 is an abundant number, since it is smaller than the sum of its proper divisors (91615520).

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

67369840 is a wasteful number, since it uses less digits than its factorization.

67369840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12649 (or 12643 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 67369840 is about 8207.9132549022. The cubic root of 67369840 is about 406.9007640188.

The spelling of 67369840 in words is "sixty-seven million, three hundred sixty-nine thousand, eight hundred forty".