82436991 has 64 divisors (see below), whose sum is σ = 148807680. Its totient is φ = 39346560.

The previous prime is 82436989. The next prime is 82437007. The reversal of 82436991 is 19963428.

It is not a de Polignac number, because 82436991 - 2¹ = 82436989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82436911) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 118956 + ... + 119646.

It is an arithmetic number, because the mean of its divisors is an integer number (2325120).

Almost surely, 2^82436991 is an apocalyptic number.

82436991 is a deficient number, since it is larger than the sum of its proper divisors (66370689).

82436991 is a wasteful number, since it uses less digits than its factorization.

82436991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756.

The product of its digits is 93312, while the sum is 42.

The square root of 82436991 is about 9079.4818684769. The cubic root of 82436991 is about 435.2185293859.

The spelling of 82436991 in words is "eighty-two million, four hundred thirty-six thousand, nine hundred ninety-one".