3216653977 has 2 divisors, whose sum is σ = 3216653978. Its totient is φ = 3216653976.

The previous prime is 3216653939. The next prime is 3216654017. The reversal of 3216653977 is 7793566123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3193267081 + 23386896 = 56509^2 + 4836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3216653977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3216653977.

It is not a weakly prime, because it can be changed into another prime (3216653177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608326988 + 1608326989.

It is an arithmetic number, because the mean of its divisors is an integer number (1608326989).

Almost surely, 2^3216653977 is an apocalyptic number.

It is an amenable number.

3216653977 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216653977 is an equidigital number, since it uses as much as digits as its factorization.

3216653977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 49.

The square root of 3216653977 is about 56715.5532195535. The cubic root of 3216653977 is about 1476.1645847332.

The spelling of 3216653977 in words is "three billion, two hundred sixteen million, six hundred fifty-three thousand, nine hundred seventy-seven".