67478540 has 24 divisors (see below), whose sum is σ = 144380880. Its totient is φ = 26481728.

The previous prime is 67478533. The next prime is 67478569. The reversal of 67478540 is 4587476.

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, 30770 + ... + 32889.

It is an arithmetic number, because the mean of its divisors is an integer number (6015870).

Almost surely, 2^67478540 is an apocalyptic number.

It is an amenable number.

67478540 is an abundant number, since it is smaller than the sum of its proper divisors (76902340).

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

67478540 is a wasteful number, since it uses less digits than its factorization.

67478540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63721 (or 63719 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 67478540 is about 8214.5322447477. The cubic root of 67478540 is about 407.1194887290.

The spelling of 67478540 in words is "sixty-seven million, four hundred seventy-eight thousand, five hundred forty".