61449907 has 2 divisors, whose sum is σ = 61449908. Its totient is φ = 61449906.

The previous prime is 61449901. The next prime is 61449919. The reversal of 61449907 is 70994416.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61449907 - 2¹⁹ = 60925619 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61449907.

It is not a weakly prime, because it can be changed into another prime (61449901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30724953 + 30724954.

It is an arithmetic number, because the mean of its divisors is an integer number (30724954).

Almost surely, 2^61449907 is an apocalyptic number.

61449907 is a deficient number, since it is larger than the sum of its proper divisors (1).

61449907 is an equidigital number, since it uses as much as digits as its factorization.

61449907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 61449907 is about 7838.9991070289. Note that the first 3 decimals coincide. The cubic root of 61449907 is about 394.6151397487.

The spelling of 61449907 in words is "sixty-one million, four hundred forty-nine thousand, nine hundred seven".