661707967283 has 8 divisors (see below), whose sum is σ = 753248595456. Its totient is φ = 575398232200.

The previous prime is 661707967259. The next prime is 661707967307. The reversal of 661707967283 is 382769707166.

It is an interprime number because it is at equal distance from previous prime (661707967259) and next prime (661707967307).

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

It is not a de Polignac number, because 661707967283 - 2²⁰ = 661706918707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (661707967183) 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 7 ways as a sum of consecutive naturals, for example, 1307723003 + ... + 1307723508.

It is an arithmetic number, because the mean of its divisors is an integer number (94156074432).

Almost surely, 2^661707967283 is an apocalyptic number.

661707967283 is a deficient number, since it is larger than the sum of its proper divisors (91540628173).

661707967283 is a wasteful number, since it uses less digits than its factorization.

661707967283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615446545.

The product of its (nonzero) digits is 32006016, while the sum is 62.

The spelling of 661707967283 in words is "six hundred sixty-one billion, seven hundred seven million, nine hundred sixty-seven thousand, two hundred eighty-three".