423661611 has 4 divisors (see below), whose sum is σ = 564882152. Its totient is φ = 282441072.

The previous prime is 423661597. The next prime is 423661621. The reversal of 423661611 is 116166324.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 423661611 - 2⁶ = 423661547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423661621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70610266 + ... + 70610271.

It is an arithmetic number, because the mean of its divisors is an integer number (141220538).

Almost surely, 2^423661611 is an apocalyptic number.

423661611 is a deficient number, since it is larger than the sum of its proper divisors (141220541).

423661611 is a wasteful number, since it uses less digits than its factorization.

423661611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141220540.

The product of its digits is 5184, while the sum is 30.

The square root of 423661611 is about 20583.0418305944. The cubic root of 423661611 is about 751.0572413983.

The spelling of 423661611 in words is "four hundred twenty-three million, six hundred sixty-one thousand, six hundred eleven".