67225440 has 48 divisors (see below), whose sum is σ = 211761648. Its totient is φ = 17926656.

The previous prime is 67225421. The next prime is 67225441. The reversal of 67225440 is 4452276.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 67225398 and 67225407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67225441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69547 + ... + 70506.

It is an arithmetic number, because the mean of its divisors is an integer number (4411701).

Almost surely, 2^67225440 is an apocalyptic number.

67225440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67225440 is an abundant number, since it is smaller than the sum of its proper divisors (144536208).

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

67225440 is a wasteful number, since it uses less digits than its factorization.

67225440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140071 (or 140063 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 67225440 is about 8199.1121470559. The cubic root of 67225440 is about 406.6098400694.

The spelling of 67225440 in words is "sixty-seven million, two hundred twenty-five thousand, four hundred forty".