665617103363 has 8 divisors (see below), whose sum is σ = 692605194048. Its totient is φ = 639163430464.

The previous prime is 665617103323. The next prime is 665617103381. The reversal of 665617103363 is 363301716566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665617103363 is a prime.

It is a super-2 number, since 2×665617103363² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665617103323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133601906 + ... + 133606887.

It is an arithmetic number, because the mean of its divisors is an integer number (86575649256).

Almost surely, 2^665617103363 is an apocalyptic number.

665617103363 is a deficient number, since it is larger than the sum of its proper divisors (26988090685).

665617103363 is a wasteful number, since it uses less digits than its factorization.

665617103363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267208893.

The product of its (nonzero) digits is 1224720, while the sum is 47.

The spelling of 665617103363 in words is "six hundred sixty-five billion, six hundred seventeen million, one hundred three thousand, three hundred sixty-three".