632421427 has 16 divisors (see below), whose sum is σ = 710052192. Its totient is φ = 558213120.

The previous prime is 632421401. The next prime is 632421431. The reversal of 632421427 is 724124236.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 632421427 - 2¹¹ = 632419379 is a prime.

It is a super-2 number, since 2×632421427² = 799913722657432658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632421487) 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, 233493 + ... + 236185.

It is an arithmetic number, because the mean of its divisors is an integer number (44378262).

Almost surely, 2^632421427 is an apocalyptic number.

632421427 is a deficient number, since it is larger than the sum of its proper divisors (77630765).

632421427 is a wasteful number, since it uses less digits than its factorization.

632421427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its digits is 16128, while the sum is 31.

The square root of 632421427 is about 25147.9905161426. The cubic root of 632421427 is about 858.3587894378.

The spelling of 632421427 in words is "six hundred thirty-two million, four hundred twenty-one thousand, four hundred twenty-seven".