67440560 has 60 divisors (see below), whose sum is σ = 172374384. Its totient is φ = 24520320.

The previous prime is 67440559. The next prime is 67440587. The reversal of 67440560 is 6504476.

It is a super-2 number, since 2×67440560² = 9096458266227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6197 + ... + 13163.

Almost surely, 2^67440560 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 67440560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86187192).

67440560 is an abundant number, since it is smaller than the sum of its proper divisors (104933824).

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

67440560 is a wasteful number, since it uses less digits than its factorization.

67440560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002 (or 6985 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 67440560 is about 8212.2201626600. The cubic root of 67440560 is about 407.0430925885.

The spelling of 67440560 in words is "sixty-seven million, four hundred forty thousand, five hundred sixty".