5642563689 has 63 divisors (see below), whose sum is σ = 9640794423. Its totient is φ = 3180153312.

The previous prime is 5642563681. The next prime is 5642563691. The reversal of 5642563689 is 9863652465.

The square root of 5642563689 is 75117.

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

It can be written as a sum of positive squares in only one way, i.e., 3202994025 + 2439569664 = 56595^2 + 49392^2 .

It is a tau number, because it is divible by the number of its divisors (63).

It is not a de Polignac number, because 5642563689 - 2³ = 5642563681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5642563681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 77295357 + ... + 77295429.

Almost surely, 2^5642563689 is an apocalyptic number.

5642563689 is the 75117-th square number.

5642563689 is the 37559-th centered octagonal number.

It is an amenable number.

5642563689 is a deficient number, since it is larger than the sum of its proper divisors (3998230734).

5642563689 is an frugal number, since it uses more digits than its factorization.

5642563689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 83 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The cubic root of 5642563689 is about 1780.2957562045.

The spelling of 5642563689 in words is "five billion, six hundred forty-two million, five hundred sixty-three thousand, six hundred eighty-nine".