74101649 has 2 divisors, whose sum is σ = 74101650. Its totient is φ = 74101648.

The previous prime is 74101631. The next prime is 74101661. The reversal of 74101649 is 94610147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73702225 + 399424 = 8585^2 + 632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74101649 is a prime.

It is not a weakly prime, because it can be changed into another prime (74101669) 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, 37050824 + 37050825.

It is an arithmetic number, because the mean of its divisors is an integer number (37050825).

Almost surely, 2^74101649 is an apocalyptic number.

It is an amenable number.

74101649 is a deficient number, since it is larger than the sum of its proper divisors (1).

74101649 is an equidigital number, since it uses as much as digits as its factorization.

74101649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 74101649 is about 8608.2314676128. The cubic root of 74101649 is about 420.0257901775.

The spelling of 74101649 in words is "seventy-four million, one hundred one thousand, six hundred forty-nine".