963581 has 2 divisors, whose sum is σ = 963582. Its totient is φ = 963580.

The previous prime is 963559. The next prime is 963601. The reversal of 963581 is 185369.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722500 + 241081 = 850^2 + 491^2 .

It is an emirp because it is prime and its reverse (185369) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 963581 - 2¹⁴ = 947197 is a prime.

It is a super-2 number, since 2×963581² = 1856976687122, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 963581.

It is not a weakly prime, because it can be changed into another prime (963181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 481790 + 481791.

It is an arithmetic number, because the mean of its divisors is an integer number (481791).

2⁹⁶³⁵⁸¹ is an apocalyptic number.

It is an amenable number.

963581 is a deficient number, since it is larger than the sum of its proper divisors (1).

963581 is an equidigital number, since it uses as much as digits as its factorization.

963581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 963581 is about 981.6216175289. The cubic root of 963581 is about 98.7709905707.

The spelling of 963581 in words is "nine hundred sixty-three thousand, five hundred eighty-one".