Search a number
-
+
63728789 is a prime number
BaseRepresentation
bin1111001100011…
…0110010010101
311102220202110112
43303012302111
5112303310124
610153532405
71402454135
oct363066225
9142822415
1063728789
1132a78423
1219414105
1310284257
14866cac5
1558dc90e
hex3cc6c95

63728789 has 2 divisors, whose sum is σ = 63728790. Its totient is φ = 63728788.

The previous prime is 63728783. The next prime is 63728809. The reversal of 63728789 is 98782736.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63600625 + 128164 = 7975^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 63728789 - 24 = 63728773 is a prime.

It is a super-2 number, since 2×637287892 = 8122717094813042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63728783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31864394 + 31864395.

It is an arithmetic number, because the mean of its divisors is an integer number (31864395).

Almost surely, 263728789 is an apocalyptic number.

It is an amenable number.

63728789 is a deficient number, since it is larger than the sum of its proper divisors (1).

63728789 is an equidigital number, since it uses as much as digits as its factorization.

63728789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 63728789 is about 7983.0313164862. The cubic root of 63728789 is about 399.4341770718.

The spelling of 63728789 in words is "sixty-three million, seven hundred twenty-eight thousand, seven hundred eighty-nine".