67667652 has 36 divisors (see below), whose sum is σ = 184207660. Its totient is φ = 20820672.

The previous prime is 67667651. The next prime is 67667689. The reversal of 67667652 is 25676676.

It can be written as a sum of positive squares in 2 ways, for example, as 10150596 + 57517056 = 3186^2 + 7584^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×67667652² = 9157822254386208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 67667598 and 67667607.

It is not an unprimeable number, because it can be changed into a prime (67667651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71827 + ... + 72762.

Almost surely, 2^67667652 is an apocalyptic number.

It is an amenable number.

67667652 is an abundant number, since it is smaller than the sum of its proper divisors (116540008).

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

67667652 is a wasteful number, since it uses less digits than its factorization.

67667652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144612 (or 144607 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 67667652 is about 8226.0350108664. The cubic root of 67667652 is about 407.4994582652.

The spelling of 67667652 in words is "sixty-seven million, six hundred sixty-seven thousand, six hundred fifty-two".