1655065663 has 8 divisors (see below), whose sum is σ = 1660669920. Its totient is φ = 1649472000.

The previous prime is 1655065631. The next prime is 1655065681. The reversal of 1655065663 is 3665605561.

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 1655065663 - 2⁵ = 1655065631 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 (1655065613) 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, 411663 + ... + 415663.

It is an arithmetic number, because the mean of its divisors is an integer number (207583740).

Almost surely, 2^1655065663 is an apocalyptic number.

1655065663 is a deficient number, since it is larger than the sum of its proper divisors (5604257).

1655065663 is an equidigital number, since it uses as much as digits as its factorization.

1655065663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297.

The product of its (nonzero) digits is 486000, while the sum is 43.

The square root of 1655065663 is about 40682.4982394149. The cubic root of 1655065663 is about 1182.8737919035.

The spelling of 1655065663 in words is "one billion, six hundred fifty-five million, sixty-five thousand, six hundred sixty-three".