83730905 has 8 divisors (see below), whose sum is σ = 101977152. Its totient is φ = 65984688.

The previous prime is 83730887. The next prime is 83730947. The reversal of 83730905 is 50903738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83730905 - 2¹² = 83726809 is a prime.

It is a Duffinian 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, 124637 + ... + 125306.

It is an arithmetic number, because the mean of its divisors is an integer number (12747144).

Almost surely, 2^83730905 is an apocalyptic number.

It is an amenable number.

83730905 is a deficient number, since it is larger than the sum of its proper divisors (18246247).

83730905 is a wasteful number, since it uses less digits than its factorization.

83730905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250015.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 83730905 is about 9150.4592780909. The cubic root of 83730905 is about 437.4837523218.

The spelling of 83730905 in words is "eighty-three million, seven hundred thirty thousand, nine hundred five".