56618947 has 8 divisors (see below), whose sum is σ = 70589952. Its totient is φ = 44118600.

The previous prime is 56618941. The next prime is 56618963. The reversal of 56618947 is 74981665.

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 56618947 - 2¹¹ = 56616899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56618897 and 56618906.

It is not an unprimeable number, because it can be changed into a prime (56618941) 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, 367579 + ... + 367732.

It is an arithmetic number, because the mean of its divisors is an integer number (8823744).

Almost surely, 2^56618947 is an apocalyptic number.

56618947 is a deficient number, since it is larger than the sum of its proper divisors (13971005).

56618947 is a wasteful number, since it uses less digits than its factorization.

56618947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735329.

The product of its digits is 362880, while the sum is 46.

The square root of 56618947 is about 7524.5562659867. The cubic root of 56618947 is about 383.9906026165.

The spelling of 56618947 in words is "fifty-six million, six hundred eighteen thousand, nine hundred forty-seven".