1564633056 has 96 divisors (see below), whose sum is σ = 4855818240. Its totient is φ = 431617536.

The previous prime is 1564633039. The next prime is 1564633061. The reversal of 1564633056 is 6503364651.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20656 + ... + 59631.

It is an arithmetic number, because the mean of its divisors is an integer number (50581440).

Almost surely, 2^1564633056 is an apocalyptic number.

1564633056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1564633056 is an abundant number, since it is smaller than the sum of its proper divisors (3291185184).

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

1564633056 is a wasteful number, since it uses less digits than its factorization.

1564633056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80336 (or 80328 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 1564633056 is about 39555.4428113250. The cubic root of 1564633056 is about 1160.9250093078.

The spelling of 1564633056 in words is "one billion, five hundred sixty-four million, six hundred thirty-three thousand, fifty-six".