3368516621 has 4 divisors (see below), whose sum is σ = 3368787552. Its totient is φ = 3368245692.

The previous prime is 3368516617. The next prime is 3368516647. The reversal of 3368516621 is 1266158633.

3368516621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1266158633 = 229 ⋅5529077.

It is a cyclic number.

It is not a de Polignac number, because 3368516621 - 2² = 3368516617 is a prime.

It is a super-2 number, since 2×3368516621² = 22693808451906515282, 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 (3368515621) 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, 115871 + ... + 141996.

It is an arithmetic number, because the mean of its divisors is an integer number (842196888).

Almost surely, 2^3368516621 is an apocalyptic number.

It is an amenable number.

3368516621 is a deficient number, since it is larger than the sum of its proper divisors (270931).

3368516621 is a wasteful number, since it uses less digits than its factorization.

3368516621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270930.

The product of its digits is 155520, while the sum is 41.

The square root of 3368516621 is about 58038.9233273671. The cubic root of 3368516621 is about 1499.0388837093.

The spelling of 3368516621 in words is "three billion, three hundred sixty-eight million, five hundred sixteen thousand, six hundred twenty-one".