16064641 has 4 divisors (see below), whose sum is σ = 16086784. Its totient is φ = 16042500.

The previous prime is 16064639. The next prime is 16064683. The reversal of 16064641 is 14646061.

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 16064641 - 2¹ = 16064639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16064621) 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, 9945 + ... + 11446.

It is an arithmetic number, because the mean of its divisors is an integer number (4021696).

Almost surely, 2^16064641 is an apocalyptic number.

It is an amenable number.

16064641 is a deficient number, since it is larger than the sum of its proper divisors (22143).

16064641 is an equidigital number, since it uses as much as digits as its factorization.

16064641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22142.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 16064641 is about 4008.0719803916. The cubic root of 16064641 is about 252.3230979974.

The spelling of 16064641 in words is "sixteen million, sixty-four thousand, six hundred forty-one".