3217777649 has 4 divisors (see below), whose sum is σ = 3321576960. Its totient is φ = 3113978340.

The previous prime is 3217777601. The next prime is 3217777657. The reversal of 3217777649 is 9467777123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9467777123 = 7 ⋅1352539589.

It is a cyclic number.

It is not a de Polignac number, because 3217777649 - 2²⁰ = 3216729073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3217777649.

It is not an unprimeable number, because it can be changed into a prime (3217777669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51899609 + ... + 51899670.

It is an arithmetic number, because the mean of its divisors is an integer number (830394240).

Almost surely, 2^3217777649 is an apocalyptic number.

It is an amenable number.

3217777649 is a deficient number, since it is larger than the sum of its proper divisors (103799311).

3217777649 is a wasteful number, since it uses less digits than its factorization.

3217777649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103799310.

The product of its digits is 3111696, while the sum is 53.

The square root of 3217777649 is about 56725.4585613902. The cubic root of 3217777649 is about 1476.3364539814.

The spelling of 3217777649 in words is "three billion, two hundred seventeen million, seven hundred seventy-seven thousand, six hundred forty-nine".