83870207 has 4 divisors (see below), whose sum is σ = 83903856. Its totient is φ = 83836560.

The previous prime is 83870173. The next prime is 83870209. The reversal of 83870207 is 70207838.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70207838 = 2 ⋅35103919.

It is a cyclic number.

It is not a de Polignac number, because 83870207 - 2¹⁴ = 83853823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83870209) 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, 12758 + ... + 18179.

It is an arithmetic number, because the mean of its divisors is an integer number (20975964).

Almost surely, 2^83870207 is an apocalyptic number.

83870207 is a deficient number, since it is larger than the sum of its proper divisors (33649).

83870207 is a wasteful number, since it uses less digits than its factorization.

83870207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33648.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 83870207 is about 9158.0678639110. The cubic root of 83870207 is about 437.7262298814.

The spelling of 83870207 in words is "eighty-three million, eight hundred seventy thousand, two hundred seven".