427505684 has 12 divisors (see below), whose sum is σ = 748374900. Its totient is φ = 213684288.

The previous prime is 427505657. The next prime is 427505707. The reversal of 427505684 is 486505724.

It can be written as a sum of positive squares in 2 ways, for example, as 164352400 + 263153284 = 12820^2 + 16222^2 .

It is a super-2 number, since 2×427505684² = 365522219704615712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529 + ... + 29280.

It is an arithmetic number, because the mean of its divisors is an integer number (62364575).

Almost surely, 2^427505684 is an apocalyptic number.

It is an amenable number.

427505684 is a deficient number, since it is larger than the sum of its proper divisors (320869216).

427505684 is a wasteful number, since it uses less digits than its factorization.

427505684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34282 (or 34280 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The square root of 427505684 is about 20676.2105812453. The cubic root of 427505684 is about 753.3219659617.

The spelling of 427505684 in words is "four hundred twenty-seven million, five hundred five thousand, six hundred eighty-four".