666298435 has 16 divisors (see below), whose sum is σ = 884535552. Its totient is φ = 477752800.

The previous prime is 666298433. The next prime is 666298453. The reversal of 666298435 is 534892666.

It is not a de Polignac number, because 666298435 - 2¹ = 666298433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666298433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81409 + ... + 89218.

It is an arithmetic number, because the mean of its divisors is an integer number (55283472).

Almost surely, 2^666298435 is an apocalyptic number.

666298435 is a deficient number, since it is larger than the sum of its proper divisors (218237117).

666298435 is a wasteful number, since it uses less digits than its factorization.

666298435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170714.

The product of its digits is 1866240, while the sum is 49.

The square root of 666298435 is about 25812.7572142148. The cubic root of 666298435 is about 873.4195951188.

The spelling of 666298435 in words is "six hundred sixty-six million, two hundred ninety-eight thousand, four hundred thirty-five".