5655621567 has 16 divisors (see below), whose sum is σ = 7951858560. Its totient is φ = 3565606752.

The previous prime is 5655621563. The next prime is 5655621581. The reversal of 5655621567 is 7651265565.

It is a happy number.

It is not a de Polignac number, because 5655621567 - 2² = 5655621563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5655621563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56028 + ... + 120209.

It is an arithmetic number, because the mean of its divisors is an integer number (496991160).

Almost surely, 2^5655621567 is an apocalyptic number.

5655621567 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

5655621567 is a deficient number, since it is larger than the sum of its proper divisors (2296236993).

5655621567 is a wasteful number, since it uses less digits than its factorization.

5655621567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176822.

The product of its digits is 1890000, while the sum is 48.

The square root of 5655621567 is about 75203.8667024509. The cubic root of 5655621567 is about 1781.6680033270.

The spelling of 5655621567 in words is "five billion, six hundred fifty-five million, six hundred twenty-one thousand, five hundred sixty-seven".