771896427 has 4 divisors (see below), whose sum is σ = 1029195240. Its totient is φ = 514597616.

The previous prime is 771896341. The next prime is 771896449. The reversal of 771896427 is 724698177.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 771896427 - 2¹¹ = 771894379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 771896427.

It is not an unprimeable number, because it can be changed into a prime (771896467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128649402 + ... + 128649407.

It is an arithmetic number, because the mean of its divisors is an integer number (257298810).

Almost surely, 2^771896427 is an apocalyptic number.

771896427 is a deficient number, since it is larger than the sum of its proper divisors (257298813).

771896427 is a wasteful number, since it uses less digits than its factorization.

771896427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257298812.

The product of its digits is 1185408, while the sum is 51.

The square root of 771896427 is about 27783.0240794626. The cubic root of 771896427 is about 917.3174959902.

The spelling of 771896427 in words is "seven hundred seventy-one million, eight hundred ninety-six thousand, four hundred twenty-seven".