67081634 has 16 divisors (see below), whose sum is σ = 103975872. Its totient is φ = 32438448.

The previous prime is 67081633. The next prime is 67081661. The reversal of 67081634 is 43618076.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 67081594 and 67081603.

It is not an unprimeable number, because it can be changed into a prime (67081631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5072 + ... + 12644.

It is an arithmetic number, because the mean of its divisors is an integer number (6498492).

Almost surely, 2^67081634 is an apocalyptic number.

67081634 is a deficient number, since it is larger than the sum of its proper divisors (36894238).

67081634 is a wasteful number, since it uses less digits than its factorization.

67081634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 67081634 is about 8190.3378440697. The cubic root of 67081634 is about 406.3196985267.

The spelling of 67081634 in words is "sixty-seven million, eighty-one thousand, six hundred thirty-four".