666448354 has 32 divisors (see below), whose sum is σ = 1212341760. Its totient is φ = 270604800.

The previous prime is 666448327. The next prime is 666448369. The reversal of 666448354 is 453844666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28719 + ... + 46450.

It is an arithmetic number, because the mean of its divisors is an integer number (37885680).

Almost surely, 2^666448354 is an apocalyptic number.

666448354 is a deficient number, since it is larger than the sum of its proper divisors (545893406).

666448354 is a wasteful number, since it uses less digits than its factorization.

666448354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75226.

The product of its digits is 1658880, while the sum is 46.

The square root of 666448354 is about 25815.6610219456. The cubic root of 666448354 is about 873.4850974852.

The spelling of 666448354 in words is "six hundred sixty-six million, four hundred forty-eight thousand, three hundred fifty-four".