83644090 has 16 divisors (see below), whose sum is σ = 150805800. Its totient is φ = 33402880.

The previous prime is 83644081. The next prime is 83644103. The reversal of 83644090 is 9044638.

It can be written as a sum of positive squares in 4 ways, for example, as 80514729 + 3129361 = 8973^2 + 1769^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115 + ... + 12934.

Almost surely, 2^83644090 is an apocalyptic number.

83644090 is a deficient number, since it is larger than the sum of its proper divisors (67161710).

83644090 is a wasteful number, since it uses less digits than its factorization.

83644090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13697.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 83644090 is about 9145.7142968715. The cubic root of 83644090 is about 437.3325007782.

The spelling of 83644090 in words is "eighty-three million, six hundred forty-four thousand, ninety".