224805649 has 4 divisors (see below), whose sum is σ = 224838640. Its totient is φ = 224772660.

The previous prime is 224805589. The next prime is 224805661. The reversal of 224805649 is 946508422.

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 224805649 - 2¹³ = 224797457 is a prime.

It is a super-2 number, since 2×224805649² = 101075159644622402, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (224805689) 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, 2067 + ... + 21304.

It is an arithmetic number, because the mean of its divisors is an integer number (56209660).

Almost surely, 2^224805649 is an apocalyptic number.

It is an amenable number.

224805649 is a deficient number, since it is larger than the sum of its proper divisors (32991).

224805649 is an equidigital number, since it uses as much as digits as its factorization.

224805649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32990.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 224805649 is about 14993.5202337543. The cubic root of 224805649 is about 608.0450258452.

The spelling of 224805649 in words is "two hundred twenty-four million, eight hundred five thousand, six hundred forty-nine".