3213347616 has 72 divisors (see below), whose sum is σ = 9675498924. Its totient is φ = 1008107520.

The previous prime is 3213347603. The next prime is 3213347617. The reversal of 3213347616 is 6167433123.

3213347616 is a `hidden beast` number, since 3 + 2 + 1 + 3 + 34 + 7 + 616 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3024560016 + 188787600 = 54996^2 + 13740^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3213347617) 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 11 ways as a sum of consecutive naturals, for example, 323265 + ... + 333056.

Almost surely, 2^3213347616 is an apocalyptic number.

3213347616 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3213347616 is an abundant number, since it is smaller than the sum of its proper divisors (6462151308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3213347616 is a wasteful number, since it uses less digits than its factorization.

3213347616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656354 (or 656343 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 3213347616 is about 56686.3970984221. The cubic root of 3213347616 is about 1475.6586339030.

The spelling of 3213347616 in words is "three billion, two hundred thirteen million, three hundred forty-seven thousand, six hundred sixteen".