83673857 has 4 divisors (see below), whose sum is σ = 83776596. Its totient is φ = 83571120.

The previous prime is 83673833. The next prime is 83673899. The reversal of 83673857 is 75837638.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40653376 + 43020481 = 6376^2 + 6559^2 .

It is a cyclic number.

It is not a de Polignac number, because 83673857 - 2¹⁶ = 83608321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83673827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50138 + ... + 51779.

It is an arithmetic number, because the mean of its divisors is an integer number (20944149).

Almost surely, 2^83673857 is an apocalyptic number.

It is an amenable number.

83673857 is a deficient number, since it is larger than the sum of its proper divisors (102739).

83673857 is a wasteful number, since it uses less digits than its factorization.

83673857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102738.

The product of its digits is 846720, while the sum is 47.

The square root of 83673857 is about 9147.3415263671. The cubic root of 83673857 is about 437.3843734711.

The spelling of 83673857 in words is "eighty-three million, six hundred seventy-three thousand, eight hundred fifty-seven".