83149563 has 32 divisors (see below), whose sum is σ = 129254400. Its totient is φ = 46569600.

The previous prime is 83149559. The next prime is 83149597. The reversal of 83149563 is 36594138.

It is not a de Polignac number, because 83149563 - 2² = 83149559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83149513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417738 + ... + 417936.

It is an arithmetic number, because the mean of its divisors is an integer number (4039200).

Almost surely, 2^83149563 is an apocalyptic number.

83149563 is a deficient number, since it is larger than the sum of its proper divisors (46104837).

83149563 is a wasteful number, since it uses less digits than its factorization.

83149563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 77760, while the sum is 39.

The square root of 83149563 is about 9118.6382206994. The cubic root of 83149563 is about 436.4689197149.

The spelling of 83149563 in words is "eighty-three million, one hundred forty-nine thousand, five hundred sixty-three".