427636865 has 8 divisors (see below), whose sum is σ = 515597568. Its totient is φ = 340487280.

The previous prime is 427636823. The next prime is 427636873. The reversal of 427636865 is 568636724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427636865 - 2⁶ = 427636801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201617 + ... + 203726.

It is an arithmetic number, because the mean of its divisors is an integer number (64449696).

Almost surely, 2^427636865 is an apocalyptic number.

It is an amenable number.

427636865 is a deficient number, since it is larger than the sum of its proper divisors (87960703).

427636865 is a wasteful number, since it uses less digits than its factorization.

427636865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405559.

The product of its digits is 1451520, while the sum is 47.

The square root of 427636865 is about 20679.3826068381. The cubic root of 427636865 is about 753.3990108810.

The spelling of 427636865 in words is "four hundred twenty-seven million, six hundred thirty-six thousand, eight hundred sixty-five".