664163461 has 8 divisors (see below), whose sum is σ = 716075360. Its totient is φ = 612369072.

The previous prime is 664163459. The next prime is 664163473. The reversal of 664163461 is 164361466.

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 664163461 - 2¹ = 664163459 is a prime.

It is a super-2 number, since 2×664163461² = 882226205854997042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 664163461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664163441) 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, 17451 + ... + 40408.

It is an arithmetic number, because the mean of its divisors is an integer number (89509420).

Almost surely, 2^664163461 is an apocalyptic number.

It is an amenable number.

664163461 is a deficient number, since it is larger than the sum of its proper divisors (51911899).

664163461 is a wasteful number, since it uses less digits than its factorization.

664163461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58755.

The product of its digits is 62208, while the sum is 37.

The square root of 664163461 is about 25771.3690167985. The cubic root of 664163461 is about 872.4857176175.

The spelling of 664163461 in words is "six hundred sixty-four million, one hundred sixty-three thousand, four hundred sixty-one".