83140636 has 12 divisors (see below), whose sum is σ = 150189760. Its totient is φ = 40229280.

The previous prime is 83140633. The next prime is 83140643. The reversal of 83140636 is 63604138.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 83140598 and 83140607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83140633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335121 + ... + 335368.

Almost surely, 2^83140636 is an apocalyptic number.

It is an amenable number.

83140636 is a deficient number, since it is larger than the sum of its proper divisors (67049124).

83140636 is a wasteful number, since it uses less digits than its factorization.

83140636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670524 (or 670522 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 83140636 is about 9118.1487156111. The cubic root of 83140636 is about 436.4532992781.

The spelling of 83140636 in words is "eighty-three million, one hundred forty thousand, six hundred thirty-six".