65772783 has 32 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 41999328.

The previous prime is 65772743. The next prime is 65772799. The reversal of 65772783 is 38727756.

65772783 is a `hidden beast` number, since 6 + 577 + 2 + 78 + 3 = 666.

It is not a de Polignac number, because 65772783 - 2⁶ = 65772719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65772713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130510 + ... + 131012.

It is an arithmetic number, because the mean of its divisors is an integer number (3175200).

Almost surely, 2^65772783 is an apocalyptic number.

65772783 is a deficient number, since it is larger than the sum of its proper divisors (35833617).

65772783 is a wasteful number, since it uses less digits than its factorization.

65772783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 702 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 65772783 is about 8110.0421083987. The cubic root of 65772783 is about 403.6597120683.

The spelling of 65772783 in words is "sixty-five million, seven hundred seventy-two thousand, seven hundred eighty-three".