83820575 has 12 divisors (see below), whose sum is σ = 104860848. Its totient is φ = 66460800.

The previous prime is 83820563. The next prime is 83820587. The reversal of 83820575 is 57502838.

It is an interprime number because it is at equal distance from previous prime (83820563) and next prime (83820587).

It is not a de Polignac number, because 83820575 - 2⁶ = 83820511 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 11 ways as a sum of consecutive naturals, for example, 12011 + ... + 17660.

It is an arithmetic number, because the mean of its divisors is an integer number (8738404).

Almost surely, 2^83820575 is an apocalyptic number.

83820575 is a deficient number, since it is larger than the sum of its proper divisors (21040273).

83820575 is a wasteful number, since it uses less digits than its factorization.

83820575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29794 (or 29789 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 83820575 is about 9155.3577210287. The cubic root of 83820575 is about 437.6398682047.

The spelling of 83820575 in words is "eighty-three million, eight hundred twenty thousand, five hundred seventy-five".