775513 has 2 divisors, whose sum is σ = 775514. Its totient is φ = 775512.

The previous prime is 775507. The next prime is 775517. The reversal of 775513 is 315577.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 760384 + 15129 = 872^2 + 123^2 .

It is a cyclic number.

It is not a de Polignac number, because 775513 - 2¹³ = 767321 is a prime.

It is not a weakly prime, because it can be changed into another prime (775517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387756 + 387757.

It is an arithmetic number, because the mean of its divisors is an integer number (387757).

2⁷⁷⁵⁵¹³ is an apocalyptic number.

It is an amenable number.

775513 is a deficient number, since it is larger than the sum of its proper divisors (1).

775513 is an equidigital number, since it uses as much as digits as its factorization.

775513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3675, while the sum is 28.

The square root of 775513 is about 880.6321593038. The cubic root of 775513 is about 91.8747902875.

The spelling of 775513 in words is "seven hundred seventy-five thousand, five hundred thirteen".