420727633 has 4 divisors (see below), whose sum is σ = 422614528. Its totient is φ = 418840740.

The previous prime is 420727631. The next prime is 420727649. The reversal of 420727633 is 336727024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420727633 - 2¹ = 420727631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420727631) 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, 943113 + ... + 943558.

It is an arithmetic number, because the mean of its divisors is an integer number (105653632).

Almost surely, 2^420727633 is an apocalyptic number.

It is an amenable number.

420727633 is a deficient number, since it is larger than the sum of its proper divisors (1886895).

420727633 is a wasteful number, since it uses less digits than its factorization.

420727633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886894.

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 420727633 is about 20511.6462771763. The cubic root of 420727633 is about 749.3194614914.

The spelling of 420727633 in words is "four hundred twenty million, seven hundred twenty-seven thousand, six hundred thirty-three".