67240408 has 32 divisors (see below), whose sum is σ = 133436160. Its totient is φ = 31699360.

The previous prime is 67240403. The next prime is 67240441. The reversal of 67240408 is 80404276.

It is a self number, because there is not a number n which added to its sum of digits gives 67240408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67240403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10491 + ... + 15637.

It is an arithmetic number, because the mean of its divisors is an integer number (4169880).

Almost surely, 2^67240408 is an apocalyptic number.

It is an amenable number.

67240408 is a deficient number, since it is larger than the sum of its proper divisors (66195752).

67240408 is a wasteful number, since it uses less digits than its factorization.

67240408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5247 (or 5243 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 67240408 is about 8200.0248780110. The cubic root of 67240408 is about 406.6400155726.

The spelling of 67240408 in words is "sixty-seven million, two hundred forty thousand, four hundred eight".