14649721 has 2 divisors, whose sum is σ = 14649722. Its totient is φ = 14649720.

The previous prime is 14649683. The next prime is 14649769. The reversal of 14649721 is 12794641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10890000 + 3759721 = 3300^2 + 1939^2 .

It is an emirp because it is prime and its reverse (12794641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14649721 - 2¹¹ = 14647673 is a prime.

It is a super-2 number, since 2×14649721² = 429228650755682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14649221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7324860 + 7324861.

It is an arithmetic number, because the mean of its divisors is an integer number (7324861).

Almost surely, 2^14649721 is an apocalyptic number.

It is an amenable number.

14649721 is a deficient number, since it is larger than the sum of its proper divisors (1).

14649721 is an equidigital number, since it uses as much as digits as its factorization.

14649721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 14649721 is about 3827.4953951638. The cubic root of 14649721 is about 244.6863736507.

The spelling of 14649721 in words is "fourteen million, six hundred forty-nine thousand, seven hundred twenty-one".