427564761 has 16 divisors (see below), whose sum is σ = 617581440. Its totient is φ = 263112720.

The previous prime is 427564751. The next prime is 427564763. The reversal of 427564761 is 167465724.

It is not a de Polignac number, because 427564761 - 2⁵ = 427564729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427564763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25845 + ... + 39026.

It is an arithmetic number, because the mean of its divisors is an integer number (38598840).

Almost surely, 2^427564761 is an apocalyptic number.

It is an amenable number.

427564761 is a deficient number, since it is larger than the sum of its proper divisors (190016679).

427564761 is an equidigital number, since it uses as much as digits as its factorization.

427564761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64913 (or 64887 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 427564761 is about 20677.6391544103. The cubic root of 427564761 is about 753.3566648781.

The spelling of 427564761 in words is "four hundred twenty-seven million, five hundred sixty-four thousand, seven hundred sixty-one".