67440532 has 12 divisors (see below), whose sum is σ = 118407520. Its totient is φ = 33609816.

The previous prime is 67440521. The next prime is 67440533. The reversal of 67440532 is 23504476.

It is a junction number, because it is equal to n+sod(n) for n = 67440494 and 67440503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67440533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26232 + ... + 28687.

Almost surely, 2^67440532 is an apocalyptic number.

It is an amenable number.

67440532 is a deficient number, since it is larger than the sum of its proper divisors (50966988).

67440532 is a wasteful number, since it uses less digits than its factorization.

67440532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55230 (or 55228 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 67440532 is about 8212.2184578834. The cubic root of 67440532 is about 407.0430362563.

The spelling of 67440532 in words is "sixty-seven million, four hundred forty thousand, five hundred thirty-two".