666424435 has 16 divisors (see below), whose sum is σ = 817084800. Its totient is φ = 521680896.

The previous prime is 666424433. The next prime is 666424439. The reversal of 666424435 is 534424666.

It is a cyclic number.

It is not a de Polignac number, because 666424435 - 2¹ = 666424433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666424433) 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, 35446 + ... + 50884.

It is an arithmetic number, because the mean of its divisors is an integer number (51067800).

Almost surely, 2^666424435 is an apocalyptic number.

666424435 is a deficient number, since it is larger than the sum of its proper divisors (150660365).

666424435 is a wasteful number, since it uses less digits than its factorization.

666424435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15630.

The product of its digits is 414720, while the sum is 40.

The square root of 666424435 is about 25815.1977524868. The cubic root of 666424435 is about 873.4746474932.

The spelling of 666424435 in words is "six hundred sixty-six million, four hundred twenty-four thousand, four hundred thirty-five".