83680770 has 32 divisors (see below), whose sum is σ = 201502080. Its totient is φ = 22240640.

The previous prime is 83680763. The next prime is 83680781. The reversal of 83680770 is 7708638.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4846 + ... + 13814.

It is an arithmetic number, because the mean of its divisors is an integer number (6296940).

Almost surely, 2^83680770 is an apocalyptic number.

83680770 is an abundant number, since it is smaller than the sum of its proper divisors (117821310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83680770 is a wasteful number, since it uses less digits than its factorization.

83680770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9290.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 83680770 is about 9147.7193879130. The cubic root of 83680770 is about 437.3964184714.

The spelling of 83680770 in words is "eighty-three million, six hundred eighty thousand, seven hundred seventy".