771427 has 2 divisors, whose sum is σ = 771428. Its totient is φ = 771426.

The previous prime is 771403. The next prime is 771431. The reversal of 771427 is 724177.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 771427 - 2⁷ = 771299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 771395 and 771404.

It is not a weakly prime, because it can be changed into another prime (771437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385713 + 385714.

It is an arithmetic number, because the mean of its divisors is an integer number (385714).

2⁷⁷¹⁴²⁷ is an apocalyptic number.

771427 is a deficient number, since it is larger than the sum of its proper divisors (1).

771427 is an equidigital number, since it uses as much as digits as its factorization.

771427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2744, while the sum is 28.

The square root of 771427 is about 878.3091710782. The cubic root of 771427 is about 91.7131503454.

The spelling of 771427 in words is "seven hundred seventy-one thousand, four hundred twenty-seven", and thus it is an iban number.