427808689 has 64 divisors (see below), whose sum is σ = 592814592. Its totient is φ = 301086720.

The previous prime is 427808653. The next prime is 427808701. The reversal of 427808689 is 986808724.

It is not a de Polignac number, because 427808689 - 2⁷ = 427808561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427808639) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5860357 + ... + 5860429.

It is an arithmetic number, because the mean of its divisors is an integer number (9262728).

Almost surely, 2^427808689 is an apocalyptic number.

It is an amenable number.

427808689 is a deficient number, since it is larger than the sum of its proper divisors (165005903).

427808689 is a wasteful number, since it uses less digits than its factorization.

427808689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 427808689 is about 20683.5366656672. The cubic root of 427808689 is about 753.4999023212.

The spelling of 427808689 in words is "four hundred twenty-seven million, eight hundred eight thousand, six hundred eighty-nine".