56781707 has 2 divisors, whose sum is σ = 56781708. Its totient is φ = 56781706.

The previous prime is 56781617. The next prime is 56781713. The reversal of 56781707 is 70718765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56781707 - 2¹⁶ = 56716171 is a prime.

It is not a weakly prime, because it can be changed into another prime (56781107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28390853 + 28390854.

It is an arithmetic number, because the mean of its divisors is an integer number (28390854).

Almost surely, 2^56781707 is an apocalyptic number.

56781707 is a deficient number, since it is larger than the sum of its proper divisors (1).

56781707 is an equidigital number, since it uses as much as digits as its factorization.

56781707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 56781707 is about 7535.3637602972. The cubic root of 56781707 is about 384.3581975778.

The spelling of 56781707 in words is "fifty-six million, seven hundred eighty-one thousand, seven hundred seven".