65503783 has 2 divisors, whose sum is σ = 65503784. Its totient is φ = 65503782.

The previous prime is 65503769. The next prime is 65503787. The reversal of 65503783 is 38730556.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65503783 is a prime.

It is a super-2 number, since 2×65503783² = 8581491174622178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65503787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32751891 + 32751892.

It is an arithmetic number, because the mean of its divisors is an integer number (32751892).

Almost surely, 2^65503783 is an apocalyptic number.

65503783 is a deficient number, since it is larger than the sum of its proper divisors (1).

65503783 is an equidigital number, since it uses as much as digits as its factorization.

65503783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 65503783 is about 8093.4407392653. The cubic root of 65503783 is about 403.1086592579.

The spelling of 65503783 in words is "sixty-five million, five hundred three thousand, seven hundred eighty-three".