67440612 has 48 divisors (see below), whose sum is σ = 160820352. Its totient is φ = 21991680.

The previous prime is 67440587. The next prime is 67440617. The reversal of 67440612 is 21604476.

It is a super-2 number, since 2×67440612² = 9096472293869088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67440612.

It is not an unprimeable number, because it can be changed into a prime (67440617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146062 + ... + 146522.

It is an arithmetic number, because the mean of its divisors is an integer number (3350424).

Almost surely, 2^67440612 is an apocalyptic number.

It is an amenable number.

67440612 is an abundant number, since it is smaller than the sum of its proper divisors (93379740).

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

67440612 is a wasteful number, since it uses less digits than its factorization.

67440612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 67440612 is about 8212.2233286729. The cubic root of 67440612 is about 407.0431972052.

The spelling of 67440612 in words is "sixty-seven million, four hundred forty thousand, six hundred twelve".