224640037 has 2 divisors, whose sum is σ = 224640038. Its totient is φ = 224640036.

The previous prime is 224640007. The next prime is 224640047. The reversal of 224640037 is 730046422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198415396 + 26224641 = 14086^2 + 5121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224640037 is a prime.

It is a super-2 number, since 2×224640037² = 100926292446722738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 224639987 and 224640014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224640007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112320018 + 112320019.

It is an arithmetic number, because the mean of its divisors is an integer number (112320019).

Almost surely, 2^224640037 is an apocalyptic number.

It is an amenable number.

224640037 is a deficient number, since it is larger than the sum of its proper divisors (1).

224640037 is an equidigital number, since it uses as much as digits as its factorization.

224640037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 224640037 is about 14987.9964304773. The cubic root of 224640037 is about 607.8956756672.

Adding to 224640037 its reverse (730046422), we get a palindrome (954686459).

The spelling of 224640037 in words is "two hundred twenty-four million, six hundred forty thousand, thirty-seven".