13070661 has 4 divisors (see below), whose sum is σ = 17427552. Its totient is φ = 8713772.

The previous prime is 13070639. The next prime is 13070719. The reversal of 13070661 is 16607031.

13070661 is digitally balanced in base 2 and base 3, because in such bases 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.

It is a cyclic number.

It is not a de Polignac number, because 13070661 - 2⁹ = 13070149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13070621) 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, 2178441 + ... + 2178446.

It is an arithmetic number, because the mean of its divisors is an integer number (4356888).

Almost surely, 2^13070661 is an apocalyptic number.

It is an amenable number.

13070661 is a deficient number, since it is larger than the sum of its proper divisors (4356891).

13070661 is an equidigital number, since it uses as much as digits as its factorization.

13070661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356890.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 13070661 is about 3615.3369137606. The cubic root of 13070661 is about 235.5587188653.

Adding to 13070661 its reverse (16607031), we get a palindrome (29677692).

It can be divided in two parts, 13070 and 661, that added together give a palindrome (13731).

The spelling of 13070661 in words is "thirteen million, seventy thousand, six hundred sixty-one".