83720606 has 16 divisors (see below), whose sum is σ = 130204368. Its totient is φ = 40344000.

The previous prime is 83720599. The next prime is 83720629. The reversal of 83720606 is 60602738.

It is a congruent number.

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, 656 + ... + 12956.

It is an arithmetic number, because the mean of its divisors is an integer number (8137773).

Almost surely, 2^83720606 is an apocalyptic number.

83720606 is a deficient number, since it is larger than the sum of its proper divisors (46483762).

83720606 is a wasteful number, since it uses less digits than its factorization.

83720606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12427.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 83720606 is about 9149.8965021469. The cubic root of 83720606 is about 437.4658145806.

The spelling of 83720606 in words is "eighty-three million, seven hundred twenty thousand, six hundred six".