83308385 has 8 divisors (see below), whose sum is σ = 100028520. Its totient is φ = 66607744.

The previous prime is 83308343. The next prime is 83308391. The reversal of 83308385 is 58380338.

It can be written as a sum of positive squares in 4 ways, for example, as 25441936 + 57866449 = 5044^2 + 7607^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83308385 is a prime.

It is a super-2 number, since 2×83308385² = 13880574022616450, which contains 22 as substring.

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, 7301 + ... + 14829.

It is an arithmetic number, because the mean of its divisors is an integer number (12503565).

Almost surely, 2^83308385 is an apocalyptic number.

It is an amenable number.

83308385 is a deficient number, since it is larger than the sum of its proper divisors (16720135).

83308385 is a wasteful number, since it uses less digits than its factorization.

83308385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 83308385 is about 9127.3427129696. The cubic root of 83308385 is about 436.7466392643.

The spelling of 83308385 in words is "eighty-three million, three hundred eight thousand, three hundred eighty-five".