56786749 has 8 divisors (see below), whose sum is σ = 61752888. Its totient is φ = 52001280.

The previous prime is 56786713. The next prime is 56786753. The reversal of 56786749 is 94768765.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28622500 + 28164249 = 5350^2 + 5307^2 .

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

It is not a de Polignac number, because 56786749 - 2⁹ = 56786237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56786696 and 56786705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56780749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44512 + ... + 45769.

It is an arithmetic number, because the mean of its divisors is an integer number (7719111).

Almost surely, 2^56786749 is an apocalyptic number.

It is an amenable number.

56786749 is a deficient number, since it is larger than the sum of its proper divisors (4966139).

56786749 is a wasteful number, since it uses less digits than its factorization.

56786749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90335.

The product of its digits is 2540160, while the sum is 52.

The square root of 56786749 is about 7535.6983087170. The cubic root of 56786749 is about 384.3695737573.

The spelling of 56786749 in words is "fifty-six million, seven hundred eighty-six thousand, seven hundred forty-nine".