67578472 has 16 divisors (see below), whose sum is σ = 136456740. Its totient is φ = 31190016.

The previous prime is 67578463. The next prime is 67578479. The reversal of 67578472 is 27487576.

It can be written as a sum of positive squares in 2 ways, for example, as 66683556 + 894916 = 8166^2 + 946^2 .

It is not an unprimeable number, because it can be changed into a prime (67578479) 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, 324793 + ... + 325000.

Almost surely, 2^67578472 is an apocalyptic number.

It is an amenable number.

67578472 is an abundant number, since it is smaller than the sum of its proper divisors (68878268).

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

67578472 is a wasteful number, since it uses less digits than its factorization.

67578472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649812 (or 649808 counting only the distinct ones).

The product of its digits is 658560, while the sum is 46.

The square root of 67578472 is about 8220.6126292388. The cubic root of 67578472 is about 407.3203634443.

The spelling of 67578472 in words is "sixty-seven million, five hundred seventy-eight thousand, four hundred seventy-two".