663155383 has 24 divisors (see below), whose sum is σ = 770293440. Its totient is φ = 569553600.

The previous prime is 663155377. The next prime is 663155401. The reversal of 663155383 is 383551366.

It is a de Polignac number, because none of the positive numbers 2^k-663155383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663155333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162913 + ... + 166933.

It is an arithmetic number, because the mean of its divisors is an integer number (32095560).

Almost surely, 2^663155383 is an apocalyptic number.

663155383 is a deficient number, since it is larger than the sum of its proper divisors (107138057).

663155383 is a wasteful number, since it uses less digits than its factorization.

663155383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119 (or 4108 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The square root of 663155383 is about 25751.8034902412. The cubic root of 663155383 is about 872.0440698030.

The spelling of 663155383 in words is "six hundred sixty-three million, one hundred fifty-five thousand, three hundred eighty-three".