56786666667 has 8 divisors (see below), whose sum is σ = 78157992960. Its totient is φ = 36636559080.

The previous prime is 56786666647. The next prime is 56786666687. The reversal of 56786666667 is 76666668765.

It is an interprime number because it is at equal distance from previous prime (56786666647) and next prime (56786666687).

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

It is not a de Polignac number, because 56786666667 - 2¹⁰ = 56786665643 is a prime.

It is a super-2 number, since 2×56786666667² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56786666647) 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, 305304567 + ... + 305304752.

It is an arithmetic number, because the mean of its divisors is an integer number (9769749120).

Almost surely, 2^56786666667 is an apocalyptic number.

56786666667 is a deficient number, since it is larger than the sum of its proper divisors (21371326293).

56786666667 is a wasteful number, since it uses less digits than its factorization.

56786666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610609353.

The product of its digits is 548674560, while the sum is 69.

The spelling of 56786666667 in words is "fifty-six billion, seven hundred eighty-six million, six hundred sixty-six thousand, six hundred sixty-seven".