67639152 has 40 divisors (see below), whose sum is σ = 199697536. Its totient is φ = 19325376.

The previous prime is 67639147. The next prime is 67639153. The reversal of 67639152 is 25193676.

It is a self number, because there is not a number n which added to its sum of digits gives 67639152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67639153) 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, 100318 + ... + 100989.

Almost surely, 2^67639152 is an apocalyptic number.

It is an amenable number.

67639152 is an abundant number, since it is smaller than the sum of its proper divisors (132058384).

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

67639152 is a wasteful number, since it uses less digits than its factorization.

67639152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201325 (or 201319 counting only the distinct ones).

The product of its digits is 68040, while the sum is 39.

The square root of 67639152 is about 8224.3025236186. The cubic root of 67639152 is about 407.4422405495.

The spelling of 67639152 in words is "sixty-seven million, six hundred thirty-nine thousand, one hundred fifty-two".