423027661 has 16 divisors (see below), whose sum is σ = 505350144. Its totient is φ = 346232304.

The previous prime is 423027659. The next prime is 423027667. The reversal of 423027661 is 166720324.

It is a cyclic number.

It is not a de Polignac number, because 423027661 - 2¹ = 423027659 is a prime.

It is a super-2 number, since 2×423027661² = 357904803942261842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423027667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108040 + ... + 111886.

It is an arithmetic number, because the mean of its divisors is an integer number (31584384).

Almost surely, 2^423027661 is an apocalyptic number.

It is an amenable number.

423027661 is a deficient number, since it is larger than the sum of its proper divisors (82322483).

423027661 is a wasteful number, since it uses less digits than its factorization.

423027661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 423027661 is about 20567.6362521316. The cubic root of 423027661 is about 750.6824372213.

Adding to 423027661 its reverse (166720324), we get a palindrome (589747985).

The spelling of 423027661 in words is "four hundred twenty-three million, twenty-seven thousand, six hundred sixty-one".