67487920 has 40 divisors (see below), whose sum is σ = 157306896. Its totient is φ = 26926848.

The previous prime is 67487891. The next prime is 67487929. The reversal of 67487920 is 2978476.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (67487929) 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, 41034 + ... + 42646.

Almost surely, 2^67487920 is an apocalyptic number.

It is an amenable number.

67487920 is an abundant number, since it is smaller than the sum of its proper divisors (89818976).

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

67487920 is a wasteful number, since it uses less digits than its factorization.

67487920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 67487920 is about 8215.1031642944. The cubic root of 67487920 is about 407.1383520292.

The spelling of 67487920 in words is "sixty-seven million, four hundred eighty-seven thousand, nine hundred twenty".