427998574656 has 63 divisors (see below), whose sum is σ = 1226825642991. Its totient is φ = 142660957824.

The previous prime is 427998574637. The next prime is 427998574673. The reversal of 427998574656 is 656475899724.

The square root of 427998574656 is 654216.

It is a perfect power (a square), and thus also a powerful number.

427998574656 is a `hidden beast` number, since 4 + 2 + 79 + 98 + 5 + 7 + 465 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 15687555 + ... + 15714813.

Almost surely, 2^427998574656 is an apocalyptic number.

427998574656 is the 654216-th square number.

It is an amenable number.

427998574656 is an abundant number, since it is smaller than the sum of its proper divisors (798827068335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427998574656 is an frugal number, since it uses more digits than its factorization.

427998574656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54536 (or 27264 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 72.

The spelling of 427998574656 in words is "four hundred twenty-seven billion, nine hundred ninety-eight million, five hundred seventy-four thousand, six hundred fifty-six".