775796217 has 8 divisors (see below), whose sum is σ = 1182165696. Its totient is φ = 443312112.

The previous prime is 775796209. The next prime is 775796221. The reversal of 775796217 is 712697577.

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

It is not a de Polignac number, because 775796217 - 2³ = 775796209 is a prime.

It is a super-2 number, since 2×775796217² = 1203719540623022178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 775796217.

It is not an unprimeable number, because it can be changed into a prime (775796237) 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, 18471318 + ... + 18471359.

It is an arithmetic number, because the mean of its divisors is an integer number (147770712).

Almost surely, 2^775796217 is an apocalyptic number.

It is an amenable number.

775796217 is a deficient number, since it is larger than the sum of its proper divisors (406369479).

775796217 is a wasteful number, since it uses less digits than its factorization.

775796217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36942687.

The product of its digits is 1296540, while the sum is 51.

The square root of 775796217 is about 27853.1186225169. The cubic root of 775796217 is about 918.8597313705.

The spelling of 775796217 in words is "seven hundred seventy-five million, seven hundred ninety-six thousand, two hundred seventeen".