67640644604674 has 16 divisors (see below), whose sum is σ = 101480659538688. Its totient is φ = 33813758534832.

The previous prime is 67640644604633. The next prime is 67640644604677. The reversal of 67640644604674 is 47640644604676.

It is not an unprimeable number, because it can be changed into a prime (67640644604677) 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, 360700624 + ... + 360888100.

It is an arithmetic number, because the mean of its divisors is an integer number (6342541221168).

Almost surely, 2^{67640644604674} is an apocalyptic number.

67640644604674 is a deficient number, since it is larger than the sum of its proper divisors (33840014934014).

67640644604674 is a wasteful number, since it uses less digits than its factorization.

67640644604674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221529.

The product of its (nonzero) digits is 390168576, while the sum is 64.

The spelling of 67640644604674 in words is "sixty-seven trillion, six hundred forty billion, six hundred forty-four million, six hundred four thousand, six hundred seventy-four".