13970641 has 4 divisors (see below), whose sum is σ = 14234292. Its totient is φ = 13706992.

The previous prime is 13970633. The next prime is 13970653. The reversal of 13970641 is 14607931.

It is a happy number.

13970641 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7700625 + 6270016 = 2775^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 13970641 - 2³ = 13970633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13970041) 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, 131746 + ... + 131851.

It is an arithmetic number, because the mean of its divisors is an integer number (3558573).

Almost surely, 2^13970641 is an apocalyptic number.

It is an amenable number.

13970641 is a deficient number, since it is larger than the sum of its proper divisors (263651).

13970641 is an equidigital number, since it uses as much as digits as its factorization.

13970641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263650.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 13970641 is about 3737.7320663739. The cubic root of 13970641 is about 240.8456338296.

The spelling of 13970641 in words is "thirteen million, nine hundred seventy thousand, six hundred forty-one".