6610415672621 has 8 divisors (see below), whose sum is σ = 6621942115320. Its totient is φ = 6598898076672.

The previous prime is 6610415672599. The next prime is 6610415672713. The reversal of 6610415672621 is 1262765140166.

It can be written as a sum of positive squares in 4 ways, for example, as 1875174196900 + 4735241475721 = 1369370^2 + 2176061^2 .

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 6610415672621 - 2¹⁸ = 6610415410477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6610415662621) 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, 715076 + ... + 3705693.

It is an arithmetic number, because the mean of its divisors is an integer number (827742764415).

Almost surely, 2^{6610415672621} is an apocalyptic number.

It is an amenable number.

6610415672621 is a deficient number, since it is larger than the sum of its proper divisors (11526442699).

6610415672621 is a wasteful number, since it uses less digits than its factorization.

6610415672621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423375.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 6610415672621 in words is "six trillion, six hundred ten billion, four hundred fifteen million, six hundred seventy-two thousand, six hundred twenty-one".