775778967 has 12 divisors (see below), whose sum is σ = 1141713144. Its totient is φ = 507427440.

The previous prime is 775778929. The next prime is 775778977. The reversal of 775778967 is 769877577.

It is not a de Polignac number, because 775778967 - 2¹⁰ = 775777943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775778977) 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, 812709 + ... + 813662.

It is an arithmetic number, because the mean of its divisors is an integer number (95142762).

Almost surely, 2^775778967 is an apocalyptic number.

775778967 is a deficient number, since it is larger than the sum of its proper divisors (365934177).

775778967 is a wasteful number, since it uses less digits than its factorization.

775778967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626430 (or 1626427 counting only the distinct ones).

The product of its digits is 36303120, while the sum is 63.

The square root of 775778967 is about 27852.8089606776. The cubic root of 775778967 is about 918.8529209704.

The spelling of 775778967 in words is "seven hundred seventy-five million, seven hundred seventy-eight thousand, nine hundred sixty-seven".