5649687655 has 16 divisors (see below), whose sum is σ = 6978875904. Its totient is φ = 4388176800.

The previous prime is 5649687653. The next prime is 5649687671. The reversal of 5649687655 is 5567869465.

It is not a de Polignac number, because 5649687655 - 2¹ = 5649687653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5649687593 and 5649687602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5649687653) 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, 42771 + ... + 114580.

It is an arithmetic number, because the mean of its divisors is an integer number (436179744).

Almost surely, 2^5649687655 is an apocalyptic number.

5649687655 is a deficient number, since it is larger than the sum of its proper divisors (1329188249).

5649687655 is a wasteful number, since it uses less digits than its factorization.

5649687655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157566.

The product of its digits is 54432000, while the sum is 61.

The square root of 5649687655 is about 75164.4041751147. The cubic root of 5649687655 is about 1781.0446730311.

The spelling of 5649687655 in words is "five billion, six hundred forty-nine million, six hundred eighty-seven thousand, six hundred fifty-five".