427761165 has 64 divisors (see below), whose sum is σ = 774547200. Its totient is φ = 200116224.

The previous prime is 427761121. The next prime is 427761179. The reversal of 427761165 is 561167724.

It is not a de Polignac number, because 427761165 - 2¹² = 427757069 is a prime.

It is a super-2 number, since 2×427761165² = 365959228564314450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 378321 + ... + 379449.

It is an arithmetic number, because the mean of its divisors is an integer number (12102300).

Almost surely, 2^427761165 is an apocalyptic number.

It is an amenable number.

427761165 is a deficient number, since it is larger than the sum of its proper divisors (346786035).

427761165 is a wasteful number, since it uses less digits than its factorization.

427761165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246.

The product of its digits is 70560, while the sum is 39.

The square root of 427761165 is about 20682.3877973507. The cubic root of 427761165 is about 753.4719999306.

The spelling of 427761165 in words is "four hundred twenty-seven million, seven hundred sixty-one thousand, one hundred sixty-five".