83649970 has 64 divisors (see below), whose sum is σ = 166020480. Its totient is φ = 30233088.

The previous prime is 83649959. The next prime is 83650001. The reversal of 83649970 is 7994638.

It is a self number, because there is not a number n which added to its sum of digits gives 83649970.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513109 + ... + 513271.

It is an arithmetic number, because the mean of its divisors is an integer number (2594070).

Almost surely, 2^83649970 is an apocalyptic number.

83649970 is a deficient number, since it is larger than the sum of its proper divisors (82370510).

83649970 is a wasteful number, since it uses less digits than its factorization.

83649970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 83649970 is about 9146.0357532649. The cubic root of 83649970 is about 437.3427483834.

The spelling of 83649970 in words is "eighty-three million, six hundred forty-nine thousand, nine hundred seventy".