73247569 has 2 divisors, whose sum is σ = 73247570. Its totient is φ = 73247568.

The previous prime is 73247567. The next prime is 73247597. The reversal of 73247569 is 96574237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 5349969 = 8240^2 + 2313^2 .

It is a cyclic number.

It is not a de Polignac number, because 73247569 - 2¹ = 73247567 is a prime.

It is a super-2 number, since 2×73247569² = 10730412728819522, which contains 22 as substring.

Together with 73247567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73247567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36623784 + 36623785.

It is an arithmetic number, because the mean of its divisors is an integer number (36623785).

Almost surely, 2^73247569 is an apocalyptic number.

It is an amenable number.

73247569 is a deficient number, since it is larger than the sum of its proper divisors (1).

73247569 is an equidigital number, since it uses as much as digits as its factorization.

73247569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 43.

The square root of 73247569 is about 8558.4793625971. The cubic root of 73247569 is about 418.4058408135.

The spelling of 73247569 in words is "seventy-three million, two hundred forty-seven thousand, five hundred sixty-nine".