67452816 has 20 divisors (see below), whose sum is σ = 174253232. Its totient is φ = 22484256.

The previous prime is 67452809. The next prime is 67452839. The reversal of 67452816 is 61825476.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702586 + ... + 702681.

Almost surely, 2^67452816 is an apocalyptic number.

It is an amenable number.

67452816 is an abundant number, since it is smaller than the sum of its proper divisors (106800416).

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

67452816 is a wasteful number, since it uses less digits than its factorization.

67452816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405278 (or 1405272 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 67452816 is about 8212.9663337920. The cubic root of 67452816 is about 407.0677484631.

The spelling of 67452816 in words is "sixty-seven million, four hundred fifty-two thousand, eight hundred sixteen".