427665331 has 8 divisors (see below), whose sum is σ = 433507760. Its totient is φ = 421862688.

The previous prime is 427665323. The next prime is 427665341. The reversal of 427665331 is 133566724.

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 427665331 - 2³ = 427665323 is a prime.

It is a super-2 number, since 2×427665331² = 365795270678679122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427665341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12025 + ... + 31621.

It is an arithmetic number, because the mean of its divisors is an integer number (54188470).

Almost surely, 2^427665331 is an apocalyptic number.

427665331 is a deficient number, since it is larger than the sum of its proper divisors (5842429).

427665331 is a wasteful number, since it uses less digits than its factorization.

427665331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19893.

The product of its digits is 90720, while the sum is 37.

The square root of 427665331 is about 20680.0708654492. The cubic root of 427665331 is about 753.4157273852.

The spelling of 427665331 in words is "four hundred twenty-seven million, six hundred sixty-five thousand, three hundred thirty-one".