68461949 has 2 divisors, whose sum is σ = 68461950. Its totient is φ = 68461948.

The previous prime is 68461933. The next prime is 68461999. The reversal of 68461949 is 94916486.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45832900 + 22629049 = 6770^2 + 4757^2 .

It is a cyclic number.

It is not a de Polignac number, because 68461949 - 2⁴ = 68461933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68461909) 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, 34230974 + 34230975.

It is an arithmetic number, because the mean of its divisors is an integer number (34230975).

Almost surely, 2^68461949 is an apocalyptic number.

It is an amenable number.

68461949 is a deficient number, since it is larger than the sum of its proper divisors (1).

68461949 is an equidigital number, since it uses as much as digits as its factorization.

68461949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 47.

The square root of 68461949 is about 8274.1736143255. The cubic root of 68461949 is about 409.0876978708.

The spelling of 68461949 in words is "sixty-eight million, four hundred sixty-one thousand, nine hundred forty-nine".