83685406 has 16 divisors (see below), whose sum is σ = 143902080. Its totient is φ = 35754840.

The previous prime is 83685401. The next prime is 83685409. The reversal of 83685406 is 60458638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83685401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4396 + ... + 13663.

It is an arithmetic number, because the mean of its divisors is an integer number (8993880).

Almost surely, 2^83685406 is an apocalyptic number.

83685406 is a deficient number, since it is larger than the sum of its proper divisors (60216674).

83685406 is a wasteful number, since it uses less digits than its factorization.

83685406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18399.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 83685406 is about 9147.9727808952. The cubic root of 83685406 is about 437.4044957248.

The spelling of 83685406 in words is "eighty-three million, six hundred eighty-five thousand, four hundred six".