445661333 has 8 divisors (see below), whose sum is σ = 480749976. Its totient is φ = 410688000.

The previous prime is 445661311. The next prime is 445661347. The reversal of 445661333 is 333166544.

It can be written as a sum of positive squares in 4 ways, for example, as 45941284 + 399720049 = 6778^2 + 19993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445661333 - 2¹² = 445657237 is a prime.

It is a super-2 number, since 2×445661333² = 397228047462673778, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445661293 and 445661302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445661393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20708 + ... + 36333.

It is an arithmetic number, because the mean of its divisors is an integer number (60093747).

Almost surely, 2^445661333 is an apocalyptic number.

It is an amenable number.

445661333 is a deficient number, since it is larger than the sum of its proper divisors (35088643).

445661333 is a wasteful number, since it uses less digits than its factorization.

445661333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57655.

The product of its digits is 77760, while the sum is 35.

The square root of 445661333 is about 21110.6923856135. The cubic root of 445661333 is about 763.8386884972.

The spelling of 445661333 in words is "four hundred forty-five million, six hundred sixty-one thousand, three hundred thirty-three".