775361061 has 12 divisors (see below), whose sum is σ = 1131513292. Its totient is φ = 511577856.

The previous prime is 775361047. The next prime is 775361087. The reversal of 775361061 is 160163577.

It can be written as a sum of positive squares in 2 ways, for example, as 198640836 + 576720225 = 14094^2 + 24015^2 .

It is not a de Polignac number, because 775361061 - 2⁵ = 775361029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775361161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 443206 + ... + 444951.

Almost surely, 2^775361061 is an apocalyptic number.

It is an amenable number.

775361061 is a deficient number, since it is larger than the sum of its proper divisors (356152231).

775361061 is a wasteful number, since it uses less digits than its factorization.

775361061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888260 (or 888257 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 775361061 is about 27845.3059060230. The cubic root of 775361061 is about 918.6878983986.

The spelling of 775361061 in words is "seven hundred seventy-five million, three hundred sixty-one thousand, sixty-one".