520695767 has 2 divisors, whose sum is σ = 520695768. Its totient is φ = 520695766.

The previous prime is 520695731. The next prime is 520695811. The reversal of 520695767 is 767596025.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520695767 is a prime.

It is a super-2 number, since 2×520695767² = 542248163543436578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520695067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260347883 + 260347884.

It is an arithmetic number, because the mean of its divisors is an integer number (260347884).

Almost surely, 2^520695767 is an apocalyptic number.

520695767 is a deficient number, since it is larger than the sum of its proper divisors (1).

520695767 is an equidigital number, since it uses as much as digits as its factorization.

520695767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 47.

The square root of 520695767 is about 22818.7591029837. The cubic root of 520695767 is about 804.5036442221.

The spelling of 520695767 in words is "five hundred twenty million, six hundred ninety-five thousand, seven hundred sixty-seven".