83140805 has 8 divisors (see below), whose sum is σ = 108838944. Its totient is φ = 60466000.

The previous prime is 83140777. The next prime is 83140817. The reversal of 83140805 is 50804138.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83140805 - 2¹² = 83136709 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 755771 + ... + 755880.

It is an arithmetic number, because the mean of its divisors is an integer number (13604868).

Almost surely, 2^83140805 is an apocalyptic number.

It is an amenable number.

83140805 is a deficient number, since it is larger than the sum of its proper divisors (25698139).

83140805 is a wasteful number, since it uses less digits than its factorization.

83140805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511667.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 83140805 is about 9118.1579828384. The cubic root of 83140805 is about 436.4535950042.

The spelling of 83140805 in words is "eighty-three million, one hundred forty thousand, eight hundred five".