67642525684 has 12 divisors (see below), whose sum is σ = 118381490500. Its totient is φ = 33819242688.

The previous prime is 67642525681. The next prime is 67642525703. The reversal of 67642525684 is 48652524676.

It can be written as a sum of positive squares in 2 ways, for example, as 24640208784 + 43002316900 = 156972^2 + 207370^2 .

It is a super-2 number, since 2×67642525684² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67642525681) 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, 428409 + ... + 564640.

Almost surely, 2^67642525684 is an apocalyptic number.

It is an amenable number.

67642525684 is a deficient number, since it is larger than the sum of its proper divisors (50738964816).

67642525684 is a wasteful number, since it uses less digits than its factorization.

67642525684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010082 (or 1010080 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 55.

The spelling of 67642525684 in words is "sixty-seven billion, six hundred forty-two million, five hundred twenty-five thousand, six hundred eighty-four".