775317049 has 8 divisors (see below), whose sum is σ = 835201472. Its totient is φ = 715467600.

The previous prime is 775317043. The next prime is 775317061. The reversal of 775317049 is 940713577.

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

It is a cyclic number.

It is not a de Polignac number, because 775317049 - 2¹¹ = 775315001 is a prime.

It is a super-2 number, since 2×775317049² = 1202233052940136802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 775316996 and 775317014.

It is not an unprimeable number, because it can be changed into a prime (775317043) 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, 54052 + ... + 66874.

It is an arithmetic number, because the mean of its divisors is an integer number (104400184).

Almost surely, 2^775317049 is an apocalyptic number.

It is an amenable number.

775317049 is a deficient number, since it is larger than the sum of its proper divisors (59884423).

775317049 is a wasteful number, since it uses less digits than its factorization.

775317049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17487.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 775317049 is about 27844.5156000244. The cubic root of 775317049 is about 918.6705155048.

The spelling of 775317049 in words is "seven hundred seventy-five million, three hundred seventeen thousand, forty-nine".