Search a number
-
+
7668901 is a prime number
BaseRepresentation
bin11101010000010010100101
3112102121202101
4131100102211
53430401101
6432212101
7122120212
oct35202245
915377671
107668901
114368839
12269a031
131786816
141038b09
15a17401
hex7504a5

7668901 has 2 divisors, whose sum is σ = 7668902. Its totient is φ = 7668900.

The previous prime is 7668893. The next prime is 7668911. The reversal of 7668901 is 1098667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6380676 + 1288225 = 2526^2 + 1135^2 .

It is an emirp because it is prime and its reverse (1098667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7668901 - 23 = 7668893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7668911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3834450 + 3834451.

It is an arithmetic number, because the mean of its divisors is an integer number (3834451).

Almost surely, 27668901 is an apocalyptic number.

It is an amenable number.

7668901 is a deficient number, since it is larger than the sum of its proper divisors (1).

7668901 is an equidigital number, since it uses as much as digits as its factorization.

7668901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7668901 is about 2769.2780647671. The cubic root of 7668901 is about 197.2018767642.

The spelling of 7668901 in words is "seven million, six hundred sixty-eight thousand, nine hundred one".