1755606661 has 8 divisors (see below), whose sum is σ = 1761580800. Its totient is φ = 1749643440.

The previous prime is 1755606529. The next prime is 1755606683. The reversal of 1755606661 is 1666065571.

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 1755606661 - 2²¹ = 1753509509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1755606361) 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, 424996 + ... + 429106.

It is an arithmetic number, because the mean of its divisors is an integer number (220197600).

Almost surely, 2^1755606661 is an apocalyptic number.

It is an amenable number.

1755606661 is a deficient number, since it is larger than the sum of its proper divisors (5974139).

1755606661 is an equidigital number, since it uses as much as digits as its factorization.

1755606661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 1755606661 is about 41899.9601551123. The cubic root of 1755606661 is about 1206.3566983177.

The spelling of 1755606661 in words is "one billion, seven hundred fifty-five million, six hundred six thousand, six hundred sixty-one".