56787673 has 2 divisors, whose sum is σ = 56787674. Its totient is φ = 56787672.

The previous prime is 56787671. The next prime is 56787719. The reversal of 56787673 is 37678765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41319184 + 15468489 = 6428^2 + 3933^2 .

It is a cyclic number.

It is not a de Polignac number, because 56787673 - 2¹ = 56787671 is a prime.

Together with 56787671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56787671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28393836 + 28393837.

It is an arithmetic number, because the mean of its divisors is an integer number (28393837).

Almost surely, 2^56787673 is an apocalyptic number.

It is an amenable number.

56787673 is a deficient number, since it is larger than the sum of its proper divisors (1).

56787673 is an equidigital number, since it uses as much as digits as its factorization.

56787673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1481760, while the sum is 49.

The square root of 56787673 is about 7535.7596166544. The cubic root of 56787673 is about 384.3716584899.

The spelling of 56787673 in words is "fifty-six million, seven hundred eighty-seven thousand, six hundred seventy-three".