13450643 has 4 divisors (see below), whose sum is σ = 13678680. Its totient is φ = 13222608.

The previous prime is 13450639. The next prime is 13450663. The reversal of 13450643 is 34605431.

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

It is not a de Polignac number, because 13450643 - 2² = 13450639 is a prime.

It is a super-2 number, since 2×13450643² = 361839594226898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13450603) 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, 113930 + ... + 114047.

It is an arithmetic number, because the mean of its divisors is an integer number (3419670).

Almost surely, 2^13450643 is an apocalyptic number.

13450643 is a deficient number, since it is larger than the sum of its proper divisors (228037).

13450643 is an equidigital number, since it uses as much as digits as its factorization.

13450643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228036.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 13450643 is about 3667.5118268385. The cubic root of 13450643 is about 237.8196206403.

The spelling of 13450643 in words is "thirteen million, four hundred fifty thousand, six hundred forty-three".