67216605 has 32 divisors (see below), whose sum is σ = 111103488. Its totient is φ = 34675200.

The previous prime is 67216573. The next prime is 67216613. The reversal of 67216605 is 50661276.

It is not a de Polignac number, because 67216605 - 2⁵ = 67216573 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 155740 + ... + 156170.

It is an arithmetic number, because the mean of its divisors is an integer number (3471984).

Almost surely, 2^67216605 is an apocalyptic number.

It is an amenable number.

67216605 is a deficient number, since it is larger than the sum of its proper divisors (43886883).

67216605 is a wasteful number, since it uses less digits than its factorization.

67216605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 67216605 is about 8198.5733515045. The cubic root of 67216605 is about 406.5920265981.

The spelling of 67216605 in words is "sixty-seven million, two hundred sixteen thousand, six hundred five".