15712643 has 4 divisors (see below), whose sum is σ = 15729168. Its totient is φ = 15696120.

The previous prime is 15712633. The next prime is 15712661. The reversal of 15712643 is 34621751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15712643 - 2⁶ = 15712579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15712603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6743 + ... + 8768.

It is an arithmetic number, because the mean of its divisors is an integer number (3932292).

Almost surely, 2^15712643 is an apocalyptic number.

15712643 is a deficient number, since it is larger than the sum of its proper divisors (16525).

15712643 is a wasteful number, since it uses less digits than its factorization.

15712643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16524.

The product of its digits is 5040, while the sum is 29.

The square root of 15712643 is about 3963.9176328476. The cubic root of 15712643 is about 250.4665580859.

The spelling of 15712643 in words is "fifteen million, seven hundred twelve thousand, six hundred forty-three".