61416749 has 2 divisors, whose sum is σ = 61416750. Its totient is φ = 61416748.

The previous prime is 61416727. The next prime is 61416779. The reversal of 61416749 is 94761416.

It is a happy number.

61416749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36844900 + 24571849 = 6070^2 + 4957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61416749 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61416709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30708374 + 30708375.

It is an arithmetic number, because the mean of its divisors is an integer number (30708375).

Almost surely, 2^61416749 is an apocalyptic number.

It is an amenable number.

61416749 is a deficient number, since it is larger than the sum of its proper divisors (1).

61416749 is an equidigital number, since it uses as much as digits as its factorization.

61416749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 61416749 is about 7836.8838832791. The cubic root of 61416749 is about 394.5441496604.

The spelling of 61416749 in words is "sixty-one million, four hundred sixteen thousand, seven hundred forty-nine".