67540132 has 24 divisors (see below), whose sum is σ = 131130720. Its totient is φ = 30178560.

The previous prime is 67540129. The next prime is 67540139. The reversal of 67540132 is 23104576.

It is a self number, because there is not a number n which added to its sum of digits gives 67540132.

It is not an unprimeable number, because it can be changed into a prime (67540139) 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, 10413 + ... + 15604.

It is an arithmetic number, because the mean of its divisors is an integer number (5463780).

Almost surely, 2^67540132 is an apocalyptic number.

It is an amenable number.

67540132 is a deficient number, since it is larger than the sum of its proper divisors (63590588).

67540132 is a wasteful number, since it uses less digits than its factorization.

67540132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26091 (or 26089 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 67540132 is about 8218.2803554028. The cubic root of 67540132 is about 407.2433191010.

Subtracting from 67540132 its reverse (23104576), we obtain a square (44435556 = 6666²).

The spelling of 67540132 in words is "sixty-seven million, five hundred forty thousand, one hundred thirty-two".