67647700749 has 24 divisors (see below), whose sum is σ = 92427769440. Its totient is φ = 44009388192.

The previous prime is 67647700733. The next prime is 67647700751. The reversal of 67647700749 is 94700774676.

It is not a de Polignac number, because 67647700749 - 2⁴ = 67647700733 is a prime.

It is a super-2 number, since 2×67647700749² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67647700949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6812302 + ... + 6822224.

It is an arithmetic number, because the mean of its divisors is an integer number (3851157060).

Almost surely, 2^67647700749 is an apocalyptic number.

It is an amenable number.

67647700749 is a deficient number, since it is larger than the sum of its proper divisors (24780068691).

67647700749 is a wasteful number, since it uses less digits than its factorization.

67647700749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11241 (or 11198 counting only the distinct ones).

The product of its (nonzero) digits is 12446784, while the sum is 57.

The spelling of 67647700749 in words is "sixty-seven billion, six hundred forty-seven million, seven hundred thousand, seven hundred forty-nine".