83563540 has 12 divisors (see below), whose sum is σ = 175483476. Its totient is φ = 33425408.

The previous prime is 83563477. The next prime is 83563541. The reversal of 83563540 is 4536538.

It can be written as a sum of positive squares in 2 ways, for example, as 39287824 + 44275716 = 6268^2 + 6654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83563496 and 83563505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83563541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2089069 + ... + 2089108.

It is an arithmetic number, because the mean of its divisors is an integer number (14623623).

Almost surely, 2^83563540 is an apocalyptic number.

It is an amenable number.

83563540 is an abundant number, since it is smaller than the sum of its proper divisors (91919936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83563540 is a wasteful number, since it uses less digits than its factorization.

83563540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178186 (or 4178184 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 83563540 is about 9141.3095341969. The cubic root of 83563540 is about 437.1920706653.

The spelling of 83563540 in words is "eighty-three million, five hundred sixty-three thousand, five hundred forty".