8672816749 has 2 divisors, whose sum is σ = 8672816750. Its totient is φ = 8672816748.

The previous prime is 8672816699. The next prime is 8672816777. The reversal of 8672816749 is 9476182768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7763372100 + 909444649 = 88110^2 + 30157^2 .

It is a cyclic number.

It is not a de Polignac number, because 8672816749 - 2¹⁵ = 8672783981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8672816693 and 8672816702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8672816249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4336408374 + 4336408375.

It is an arithmetic number, because the mean of its divisors is an integer number (4336408375).

Almost surely, 2^8672816749 is an apocalyptic number.

It is an amenable number.

8672816749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8672816749 is an equidigital number, since it uses as much as digits as its factorization.

8672816749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 58.

The square root of 8672816749 is about 93127.9590080229. The cubic root of 8672816749 is about 2054.5658098045.

The spelling of 8672816749 in words is "eight billion, six hundred seventy-two million, eight hundred sixteen thousand, seven hundred forty-nine".