83764785 has 16 divisors (see below), whose sum is σ = 144333504. Its totient is φ = 41237952.

The previous prime is 83764783. The next prime is 83764801. The reversal of 83764785 is 58746738.

It is not a de Polignac number, because 83764785 - 2¹ = 83764783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83764783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214587 + ... + 214976.

It is an arithmetic number, because the mean of its divisors is an integer number (9020844).

Almost surely, 2^83764785 is an apocalyptic number.

It is an amenable number.

83764785 is a deficient number, since it is larger than the sum of its proper divisors (60568719).

83764785 is a wasteful number, since it uses less digits than its factorization.

83764785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429584.

The product of its digits is 1128960, while the sum is 48.

The square root of 83764785 is about 9152.3103640556. The cubic root of 83764785 is about 437.5427506524.

The spelling of 83764785 in words is "eighty-three million, seven hundred sixty-four thousand, seven hundred eighty-five".