5661020567 has 4 divisors (see below), whose sum is σ = 5907151920. Its totient is φ = 5414889216.

The previous prime is 5661020557. The next prime is 5661020579. The reversal of 5661020567 is 7650201665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5661020567 - 2¹⁴ = 5661004183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5661020567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661020557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123065642 + ... + 123065687.

It is an arithmetic number, because the mean of its divisors is an integer number (1476787980).

Almost surely, 2^5661020567 is an apocalyptic number.

5661020567 is a deficient number, since it is larger than the sum of its proper divisors (246131353).

5661020567 is a wasteful number, since it uses less digits than its factorization.

5661020567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246131352.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 5661020567 is about 75239.7539004481. The cubic root of 5661020567 is about 1782.2347648603.

It can be divided in two parts, 56610 and 20567, that added together give a palindrome (77177).

The spelling of 5661020567 in words is "five billion, six hundred sixty-one million, twenty thousand, five hundred sixty-seven".