67644674 has 24 divisors (see below), whose sum is σ = 109070640. Its totient is φ = 31370328.

The previous prime is 67644673. The next prime is 67644721. The reversal of 67644674 is 47644676.

It is not an unprimeable number, because it can be changed into a prime (67644673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414917 + ... + 415079.

It is an arithmetic number, because the mean of its divisors is an integer number (4544610).

Almost surely, 2^67644674 is an apocalyptic number.

67644674 is a deficient number, since it is larger than the sum of its proper divisors (41425966).

67644674 is a wasteful number, since it uses less digits than its factorization.

67644674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 251 counting only the distinct ones).

The product of its digits is 677376, while the sum is 44.

The square root of 67644674 is about 8224.6382291259. The cubic root of 67644674 is about 407.4533279881.

The spelling of 67644674 in words is "sixty-seven million, six hundred forty-four thousand, six hundred seventy-four".