665164463 has 8 divisors (see below), whose sum is σ = 681109968. Its totient is φ = 649240704.

The previous prime is 665164433. The next prime is 665164477. The reversal of 665164463 is 364461566.

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

It is a cyclic number.

It is not a de Polignac number, because 665164463 - 2⁶ = 665164399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 665164463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665164403) 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, 68231 + ... + 77367.

It is an arithmetic number, because the mean of its divisors is an integer number (85138746).

Almost surely, 2^665164463 is an apocalyptic number.

665164463 is a deficient number, since it is larger than the sum of its proper divisors (15945505).

665164463 is a wasteful number, since it uses less digits than its factorization.

665164463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10873.

The product of its digits is 311040, while the sum is 41.

The square root of 665164463 is about 25790.7825201175. The cubic root of 665164463 is about 872.9238233959.

The spelling of 665164463 in words is "six hundred sixty-five million, one hundred sixty-four thousand, four hundred sixty-three".