660996471 has 8 divisors (see below), whose sum is σ = 919647360. Its totient is φ = 421504952.

The previous prime is 660996463. The next prime is 660996487. The reversal of 660996471 is 174699066.

660996471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 660996471 - 2³ = 660996463 is a prime.

It is a super-3 number, since 3×660996471³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 660996471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660996461) 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, 4789761 + ... + 4789898.

It is an arithmetic number, because the mean of its divisors is an integer number (114955920).

Almost surely, 2^660996471 is an apocalyptic number.

660996471 is a deficient number, since it is larger than the sum of its proper divisors (258650889).

660996471 is a wasteful number, since it uses less digits than its factorization.

660996471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9579685.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 660996471 is about 25709.8516331775. The cubic root of 660996471 is about 871.0967236384.

The spelling of 660996471 in words is "six hundred sixty million, nine hundred ninety-six thousand, four hundred seventy-one".