67322240 has 64 divisors (see below), whose sum is σ = 165350160. Its totient is φ = 26191872.

The previous prime is 67322239. The next prime is 67322251. The reversal of 67322240 is 4222376.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×67322240³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22259 + ... + 25101.

Almost surely, 2^67322240 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 67322240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82675080).

67322240 is an abundant number, since it is smaller than the sum of its proper divisors (98027920).

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

67322240 is a wasteful number, since it uses less digits than its factorization.

67322240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 67322240 is about 8205.0131017568. The cubic root of 67322240 is about 406.8049098515.

The spelling of 67322240 in words is "sixty-seven million, three hundred twenty-two thousand, two hundred forty".