5655707661 has 8 divisors (see below), whose sum is σ = 7544494080. Its totient is φ = 3768696512.

The previous prime is 5655707639. The next prime is 5655707669. The reversal of 5655707661 is 1667075565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5655707661 - 2⁹ = 5655707149 is a prime.

It is a super-5 number, since 5×5655707661⁵ (a number of 50 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5655707661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5655707669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436365 + ... + 449138.

It is an arithmetic number, because the mean of its divisors is an integer number (943061760).

Almost surely, 2^5655707661 is an apocalyptic number.

It is an amenable number.

5655707661 is a deficient number, since it is larger than the sum of its proper divisors (1888786419).

5655707661 is a wasteful number, since it uses less digits than its factorization.

5655707661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887635.

The product of its (nonzero) digits is 1323000, while the sum is 48.

The square root of 5655707661 is about 75204.4391043507. The cubic root of 5655707661 is about 1781.6770438981.

The spelling of 5655707661 in words is "five billion, six hundred fifty-five million, seven hundred seven thousand, six hundred sixty-one".