8674723021 has 2 divisors, whose sum is σ = 8674723022. Its totient is φ = 8674723020.

The previous prime is 8674723003. The next prime is 8674723039. The reversal of 8674723021 is 1203274768.

It is a balanced prime because it is at equal distance from previous prime (8674723003) and next prime (8674723039).

It can be written as a sum of positive squares in only one way, i.e., 5746398025 + 2928324996 = 75805^2 + 54114^2 .

It is a cyclic number.

It is not a de Polignac number, because 8674723021 - 2⁵ = 8674722989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8674723621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4337361510 + 4337361511.

It is an arithmetic number, because the mean of its divisors is an integer number (4337361511).

Almost surely, 2^8674723021 is an apocalyptic number.

It is an amenable number.

8674723021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8674723021 is an equidigital number, since it uses as much as digits as its factorization.

8674723021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 8674723021 is about 93138.1931379389. The cubic root of 8674723021 is about 2054.7163289293.

Adding to 8674723021 its reverse (1203274768), we get a palindrome (9877997789).

The spelling of 8674723021 in words is "eight billion, six hundred seventy-four million, seven hundred twenty-three thousand, twenty-one".