75620449 has 2 divisors, whose sum is σ = 75620450. Its totient is φ = 75620448.

The previous prime is 75620411. The next prime is 75620491. The reversal of 75620449 is 94402657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75603025 + 17424 = 8695^2 + 132^2 .

It is a cyclic number.

It is not a de Polignac number, because 75620449 - 2¹¹ = 75618401 is a prime.

It is not a weakly prime, because it can be changed into another prime (75620249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37810224 + 37810225.

It is an arithmetic number, because the mean of its divisors is an integer number (37810225).

Almost surely, 2^75620449 is an apocalyptic number.

It is an amenable number.

75620449 is a deficient number, since it is larger than the sum of its proper divisors (1).

75620449 is an equidigital number, since it uses as much as digits as its factorization.

75620449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 75620449 is about 8696.0018974239. The cubic root of 75620449 is about 422.8760448816.

The spelling of 75620449 in words is "seventy-five million, six hundred twenty thousand, four hundred forty-nine".