Search a number
-
+
987664913 is a prime number
BaseRepresentation
bin111010110111101…
…001001000010001
32112211110120112222
4322313221020101
54010320234123
6242001030425
733322004354
oct7267511021
92484416488
10987664913
114675692a4
12236925415
1312980b811
149525a29b
155ba966c8
hex3ade9211

987664913 has 2 divisors, whose sum is σ = 987664914. Its totient is φ = 987664912.

The previous prime is 987664907. The next prime is 987664943. The reversal of 987664913 is 319466789.

987664913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880190224 + 107474689 = 29668^2 + 10367^2 .

It is a cyclic number.

It is not a de Polignac number, because 987664913 - 26 = 987664849 is a prime.

It is not a weakly prime, because it can be changed into another prime (987664943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493832456 + 493832457.

It is an arithmetic number, because the mean of its divisors is an integer number (493832457).

Almost surely, 2987664913 is an apocalyptic number.

It is an amenable number.

987664913 is a deficient number, since it is larger than the sum of its proper divisors (1).

987664913 is an equidigital number, since it uses as much as digits as its factorization.

987664913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 987664913 is about 31427.1365701681. The cubic root of 987664913 is about 995.8712814765.

The spelling of 987664913 in words is "nine hundred eighty-seven million, six hundred sixty-four thousand, nine hundred thirteen".