3345536621 has 4 divisors (see below), whose sum is σ = 3823470432. Its totient is φ = 2867602812.

The previous prime is 3345536609. The next prime is 3345536653. The reversal of 3345536621 is 1266355433.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3345536621 - 2³⁰ = 2271794797 is a prime.

It is a super-2 number, since 2×3345536621² = 22385230564904195282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3345526621) 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, 238966895 + ... + 238966908.

It is an arithmetic number, because the mean of its divisors is an integer number (955867608).

Almost surely, 2^3345536621 is an apocalyptic number.

It is an amenable number.

3345536621 is a deficient number, since it is larger than the sum of its proper divisors (477933811).

3345536621 is an equidigital number, since it uses as much as digits as its factorization.

3345536621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477933810.

The product of its digits is 194400, while the sum is 38.

The square root of 3345536621 is about 57840.6139403793. The cubic root of 3345536621 is about 1495.6222911689.

The spelling of 3345536621 in words is "three billion, three hundred forty-five million, five hundred thirty-six thousand, six hundred twenty-one".