332021645 has 8 divisors (see below), whose sum is σ = 421862904. Its totient is φ = 249992704.

The previous prime is 332021639. The next prime is 332021653. The reversal of 332021645 is 546120233.

It can be written as a sum of positive squares in 4 ways, for example, as 154306084 + 177715561 = 12422^2 + 13331^2 .

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 332021645 - 2¹⁶ = 331956109 is a prime.

It is a super-3 number, since 3×332021645³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1952984 + ... + 1953153.

It is an arithmetic number, because the mean of its divisors is an integer number (52732863).

Almost surely, 2^332021645 is an apocalyptic number.

It is an amenable number.

332021645 is a deficient number, since it is larger than the sum of its proper divisors (89841259).

332021645 is a wasteful number, since it uses less digits than its factorization.

332021645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906159.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 332021645 is about 18221.4611104598. The cubic root of 332021645 is about 692.4506048952.

Adding to 332021645 its reverse (546120233), we get a palindrome (878141878).

The spelling of 332021645 in words is "three hundred thirty-two million, twenty-one thousand, six hundred forty-five".