427277761 has 4 divisors (see below), whose sum is σ = 427359024. Its totient is φ = 427196500.

The previous prime is 427277759. The next prime is 427277789. The reversal of 427277761 is 167772724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427277761 - 2¹ = 427277759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427277731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32155 + ... + 43456.

It is an arithmetic number, because the mean of its divisors is an integer number (106839756).

Almost surely, 2^427277761 is an apocalyptic number.

It is an amenable number.

427277761 is a deficient number, since it is larger than the sum of its proper divisors (81263).

427277761 is an equidigital number, since it uses as much as digits as its factorization.

427277761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81262.

The product of its digits is 230496, while the sum is 43.

The square root of 427277761 is about 20670.6981256077. The cubic root of 427277761 is about 753.1880652663.

The spelling of 427277761 in words is "four hundred twenty-seven million, two hundred seventy-seven thousand, seven hundred sixty-one".