83563081 has 6 divisors (see below), whose sum is σ = 97206090. Its totient is φ = 71625456.

The previous prime is 83563069. The next prime is 83563087. The reversal of 83563081 is 18036538.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 63680400 + 19882681 = 7980^2 + 4459^2 .

It is not a de Polignac number, because 83563081 - 2¹⁷ = 83432009 is a prime.

It is a super-2 number, since 2×83563081² = 13965577012425122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83563087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852636 + ... + 852733.

It is an arithmetic number, because the mean of its divisors is an integer number (16201015).

Almost surely, 2^83563081 is an apocalyptic number.

It is an amenable number.

83563081 is a deficient number, since it is larger than the sum of its proper divisors (13643009).

83563081 is a wasteful number, since it uses less digits than its factorization.

83563081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705383 (or 1705376 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 83563081 is about 9141.2844283503. The cubic root of 83563081 is about 437.1912701905.

The spelling of 83563081 in words is "eighty-three million, five hundred sixty-three thousand, eighty-one".