3216761667 has 40 divisors (see below), whose sum is σ = 5511435776. Its totient is φ = 1831562928.

The previous prime is 3216761629. The next prime is 3216761671. The reversal of 3216761667 is 7661676123.

3216761667 is a `hidden beast` number, since 3 + 21 + 6 + 7 + 616 + 6 + 7 = 666.

It is not a de Polignac number, because 3216761667 - 2¹⁰ = 3216760643 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3216761767) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 150438 + ... + 170484.

Almost surely, 2^3216761667 is an apocalyptic number.

3216761667 is a deficient number, since it is larger than the sum of its proper divisors (2294674109).

3216761667 is a wasteful number, since it uses less digits than its factorization.

3216761667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20349 (or 20340 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 3216761667 is about 56716.5025984501. The cubic root of 3216761667 is about 1476.1810579993.

The spelling of 3216761667 in words is "three billion, two hundred sixteen million, seven hundred sixty-one thousand, six hundred sixty-seven".