330472621 has 4 divisors (see below), whose sum is σ = 330907644. Its totient is φ = 330037600.

The previous prime is 330472619. The next prime is 330472627. The reversal of 330472621 is 126274033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 126274033 = 29 ⋅4354277.

It can be written as a sum of positive squares in 2 ways, for example, as 81180100 + 249292521 = 9010^2 + 15789^2 .

It is a cyclic number.

It is not a de Polignac number, because 330472621 - 2¹ = 330472619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 330472621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330472627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216370 + ... + 217891.

It is an arithmetic number, because the mean of its divisors is an integer number (82726911).

Almost surely, 2^330472621 is an apocalyptic number.

It is an amenable number.

330472621 is a deficient number, since it is larger than the sum of its proper divisors (435023).

330472621 is an equidigital number, since it uses as much as digits as its factorization.

330472621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435022.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 330472621 is about 18178.9059351766. The cubic root of 330472621 is about 691.3720657485.

The spelling of 330472621 in words is "three hundred thirty million, four hundred seventy-two thousand, six hundred twenty-one".