65732449 has 2 divisors, whose sum is σ = 65732450. Its totient is φ = 65732448.

The previous prime is 65732411. The next prime is 65732453. The reversal of 65732449 is 94423756.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61732449 + 4000000 = 7857^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 65732449 - 2¹⁵ = 65699681 is a prime.

It is not a weakly prime, because it can be changed into another prime (65732479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32866224 + 32866225.

It is an arithmetic number, because the mean of its divisors is an integer number (32866225).

Almost surely, 2^65732449 is an apocalyptic number.

It is an amenable number.

65732449 is a deficient number, since it is larger than the sum of its proper divisors (1).

65732449 is an equidigital number, since it uses as much as digits as its factorization.

65732449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 65732449 is about 8107.5550568590. Note that the first 3 decimals coincide. The cubic root of 65732449 is about 403.5771827946.

The spelling of 65732449 in words is "sixty-five million, seven hundred thirty-two thousand, four hundred forty-nine".