83609215 has 8 divisors (see below), whose sum is σ = 105611760. Its totient is φ = 63366912.

The previous prime is 83609189. The next prime is 83609219. The reversal of 83609215 is 51290638.

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

It is a cyclic number.

It is not a de Polignac number, because 83609215 - 2⁷ = 83609087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83609219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439954 + ... + 440143.

It is an arithmetic number, because the mean of its divisors is an integer number (13201470).

Almost surely, 2^83609215 is an apocalyptic number.

83609215 is a deficient number, since it is larger than the sum of its proper divisors (22002545).

83609215 is a wasteful number, since it uses less digits than its factorization.

83609215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880121.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 83609215 is about 9143.8074673519. The cubic root of 83609215 is about 437.2717111029.

The spelling of 83609215 in words is "eighty-three million, six hundred nine thousand, two hundred fifteen".