427086665 has 8 divisors (see below), whose sum is σ = 542651400. Its totient is φ = 321571072.

The previous prime is 427086623. The next prime is 427086689. The reversal of 427086665 is 566680724.

It can be written as a sum of positive squares in 4 ways, for example, as 67453369 + 359633296 = 8213^2 + 18964^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 427086665 - 2¹² = 427082569 is a prime.

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, 2512190 + ... + 2512359.

It is an arithmetic number, because the mean of its divisors is an integer number (67831425).

Almost surely, 2^427086665 is an apocalyptic number.

It is an amenable number.

427086665 is a deficient number, since it is larger than the sum of its proper divisors (115564735).

427086665 is a wasteful number, since it uses less digits than its factorization.

427086665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024571.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 427086665 is about 20666.0752200315. The cubic root of 427086665 is about 753.0757630730.

The spelling of 427086665 in words is "four hundred twenty-seven million, eighty-six thousand, six hundred sixty-five".