775197601 has 2 divisors, whose sum is σ = 775197602. Its totient is φ = 775197600.

The previous prime is 775197551. The next prime is 775197617. The reversal of 775197601 is 106791577.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535691025 + 239506576 = 23145^2 + 15476^2 .

It is an emirp because it is prime and its reverse (106791577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 775197601 - 2²⁷ = 640979873 is a prime.

It is a super-4 number, since 4×775197601⁴ (a number of 37 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (775197641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387598800 + 387598801.

It is an arithmetic number, because the mean of its divisors is an integer number (387598801).

Almost surely, 2^775197601 is an apocalyptic number.

It is an amenable number.

775197601 is a deficient number, since it is larger than the sum of its proper divisors (1).

775197601 is an equidigital number, since it uses as much as digits as its factorization.

775197601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92610, while the sum is 43.

The square root of 775197601 is about 27842.3706066851. The cubic root of 775197601 is about 918.6233352398.

The spelling of 775197601 in words is "seven hundred seventy-five million, one hundred ninety-seven thousand, six hundred one".