8667367421 has 2 divisors, whose sum is σ = 8667367422. Its totient is φ = 8667367420.

The previous prime is 8667367409. The next prime is 8667367441. The reversal of 8667367421 is 1247637668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8048601796 + 618765625 = 89714^2 + 24875^2 .

It is a cyclic number.

It is not a de Polignac number, because 8667367421 - 2¹⁴ = 8667351037 is a prime.

It is a super-2 number, since 2×8667367421² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8667367421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8667367441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4333683710 + 4333683711.

It is an arithmetic number, because the mean of its divisors is an integer number (4333683711).

Almost surely, 2^8667367421 is an apocalyptic number.

It is an amenable number.

8667367421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8667367421 is an equidigital number, since it uses as much as digits as its factorization.

8667367421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 50.

The square root of 8667367421 is about 93098.6972035592. The cubic root of 8667367421 is about 2054.1354095075.

The spelling of 8667367421 in words is "eight billion, six hundred sixty-seven million, three hundred sixty-seven thousand, four hundred twenty-one".