1672217663 has 2 divisors, whose sum is σ = 1672217664. Its totient is φ = 1672217662.

The previous prime is 1672217621. The next prime is 1672217693. The reversal of 1672217663 is 3667122761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1672217663 - 2¹⁶ = 1672152127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1672217663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672217693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836108831 + 836108832.

It is an arithmetic number, because the mean of its divisors is an integer number (836108832).

Almost surely, 2^1672217663 is an apocalyptic number.

1672217663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672217663 is an equidigital number, since it uses as much as digits as its factorization.

1672217663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 41.

The square root of 1672217663 is about 40892.7580752387. The cubic root of 1672217663 is about 1186.9459296335.

The spelling of 1672217663 in words is "one billion, six hundred seventy-two million, two hundred seventeen thousand, six hundred sixty-three".