775648077 has 8 divisors (see below), whose sum is σ = 1088628960. Its totient is φ = 489882960.

The previous prime is 775648073. The next prime is 775648099. The reversal of 775648077 is 770846577.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 775648077 - 2² = 775648073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775648073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6803874 + ... + 6803987.

It is an arithmetic number, because the mean of its divisors is an integer number (136078620).

Almost surely, 2^775648077 is an apocalyptic number.

It is an amenable number.

775648077 is a deficient number, since it is larger than the sum of its proper divisors (312980883).

775648077 is a wasteful number, since it uses less digits than its factorization.

775648077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13607883.

The product of its (nonzero) digits is 2304960, while the sum is 51.

The square root of 775648077 is about 27850.4591883150. The cubic root of 775648077 is about 918.8012415495.

The spelling of 775648077 in words is "seven hundred seventy-five million, six hundred forty-eight thousand, seventy-seven".