83765745 has 112 divisors (see below), whose sum is σ = 178377600. Its totient is φ = 37721376.

The previous prime is 83765741. The next prime is 83765761. The reversal of 83765745 is 54756738.

83765745 is a `hidden beast` number, since 8 + 3 + 76 + 574 + 5 = 666.

It is not a de Polignac number, because 83765745 - 2² = 83765741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83765745.

It is not an unprimeable number, because it can be changed into a prime (83765741) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1250202 + ... + 1250268.

Almost surely, 2^83765745 is an apocalyptic number.

It is an amenable number.

83765745 is an abundant number, since it is smaller than the sum of its proper divisors (94611855).

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

83765745 is an frugal number, since it uses more digits than its factorization.

83765745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 82 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 83765745 is about 9152.3628096793. The cubic root of 83765745 is about 437.5444221561.

The spelling of 83765745 in words is "eighty-three million, seven hundred sixty-five thousand, seven hundred forty-five".