2023621655 has 16 divisors (see below), whose sum is σ = 2664429984. Its totient is φ = 1463210880.

The previous prime is 2023621651. The next prime is 2023621669. The reversal of 2023621655 is 5561263202.

It is not a de Polignac number, because 2023621655 - 2² = 2023621651 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 (2023621651) 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, 96824 + ... + 115853.

It is an arithmetic number, because the mean of its divisors is an integer number (166526874).

Almost surely, 2^2023621655 is an apocalyptic number.

2023621655 is a deficient number, since it is larger than the sum of its proper divisors (640808329).

2023621655 is a wasteful number, since it uses less digits than its factorization.

2023621655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212866.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2023621655 is about 44984.6824485847. The cubic root of 2023621655 is about 1264.8618855912.

Adding to 2023621655 its reverse (5561263202), we get a palindrome (7584884857).

The spelling of 2023621655 in words is "two billion, twenty-three million, six hundred twenty-one thousand, six hundred fifty-five".