56669471 has 8 divisors (see below), whose sum is σ = 57845424. Its totient is φ = 55503360.

The previous prime is 56669461. The next prime is 56669477. The reversal of 56669471 is 17496665.

It is a happy number.

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 56669471 - 2⁶ = 56669407 is a prime.

It is a super-3 number, since 3×56669471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56669477) 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, 9791 + ... + 14463.

It is an arithmetic number, because the mean of its divisors is an integer number (7230678).

Almost surely, 2^56669471 is an apocalyptic number.

56669471 is a deficient number, since it is larger than the sum of its proper divisors (1175953).

56669471 is a wasteful number, since it uses less digits than its factorization.

56669471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921.

The product of its digits is 272160, while the sum is 44.

The square root of 56669471 is about 7527.9127917372. The cubic root of 56669471 is about 384.1047868507.

The spelling of 56669471 in words is "fifty-six million, six hundred sixty-nine thousand, four hundred seventy-one".