67213534 has 16 divisors (see below), whose sum is σ = 103831200. Its totient is φ = 32608224.

The previous prime is 67213519. The next prime is 67213541. The reversal of 67213534 is 43531276.

It is a junction number, because it is equal to n+sod(n) for n = 67213496 and 67213505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31452 + ... + 33520.

It is an arithmetic number, because the mean of its divisors is an integer number (6489450).

Almost surely, 2^67213534 is an apocalyptic number.

67213534 is a deficient number, since it is larger than the sum of its proper divisors (36617666).

67213534 is a wasteful number, since it uses less digits than its factorization.

67213534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547.

The product of its digits is 15120, while the sum is 31.

The square root of 67213534 is about 8198.3860606829. The cubic root of 67213534 is about 406.5858343627.

The spelling of 67213534 in words is "sixty-seven million, two hundred thirteen thousand, five hundred thirty-four".