427146687 has 24 divisors (see below), whose sum is σ = 674593920. Its totient is φ = 258294480.

The previous prime is 427146673. The next prime is 427146697. The reversal of 427146687 is 786641724.

427146687 is a `hidden beast` number, since 42 + 71 + 466 + 87 = 666.

It is not a de Polignac number, because 427146687 - 2⁶ = 427146623 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427146697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41614 + ... + 50852.

It is an arithmetic number, because the mean of its divisors is an integer number (28108080).

Almost surely, 2^427146687 is an apocalyptic number.

427146687 is a deficient number, since it is larger than the sum of its proper divisors (247447233).

427146687 is a wasteful number, since it uses less digits than its factorization.

427146687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9723 (or 9720 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 427146687 is about 20667.5273557337. The cubic root of 427146687 is about 753.1110400631. Note that the first 3 decimals are identical.

The spelling of 427146687 in words is "four hundred twenty-seven million, one hundred forty-six thousand, six hundred eighty-seven".