5662177721 has 2 divisors, whose sum is σ = 5662177722. Its totient is φ = 5662177720.

The previous prime is 5662177711. The next prime is 5662177739. The reversal of 5662177721 is 1277712665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3846480400 + 1815697321 = 62020^2 + 42611^2 .

It is a cyclic number.

It is not a de Polignac number, because 5662177721 - 2⁶ = 5662177657 is a prime.

It is not a weakly prime, because it can be changed into another prime (5662177711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2831088860 + 2831088861.

It is an arithmetic number, because the mean of its divisors is an integer number (2831088861).

Almost surely, 2^5662177721 is an apocalyptic number.

It is an amenable number.

5662177721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5662177721 is an equidigital number, since it uses as much as digits as its factorization.

5662177721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 44.

The square root of 5662177721 is about 75247.4432854698. The cubic root of 5662177721 is about 1782.3561905267.

The spelling of 5662177721 in words is "five billion, six hundred sixty-two million, one hundred seventy-seven thousand, seven hundred twenty-one".