83763561 has 16 divisors (see below), whose sum is σ = 127872000. Its totient is φ = 47777808.

The previous prime is 83763551. The next prime is 83763577. The reversal of 83763561 is 16536738.

It is not a de Polignac number, because 83763561 - 2¹⁰ = 83762537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83763551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9250 + ... + 15908.

It is an arithmetic number, because the mean of its divisors is an integer number (7992000).

Almost surely, 2^83763561 is an apocalyptic number.

It is an amenable number.

83763561 is a deficient number, since it is larger than the sum of its proper divisors (44108439).

83763561 is a wasteful number, since it uses less digits than its factorization.

83763561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7268.

The product of its digits is 90720, while the sum is 39.

The square root of 83763561 is about 9152.2434954496. The cubic root of 83763561 is about 437.5406194667.

The spelling of 83763561 in words is "eighty-three million, seven hundred sixty-three thousand, five hundred sixty-one".