64919741 has 2 divisors, whose sum is σ = 64919742. Its totient is φ = 64919740.

The previous prime is 64919707. The next prime is 64919791. The reversal of 64919741 is 14791946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62805625 + 2114116 = 7925^2 + 1454^2 .

It is a cyclic number.

It is not a de Polignac number, because 64919741 - 2¹⁸ = 64657597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64919791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32459870 + 32459871.

It is an arithmetic number, because the mean of its divisors is an integer number (32459871).

Almost surely, 2^64919741 is an apocalyptic number.

It is an amenable number.

64919741 is a deficient number, since it is larger than the sum of its proper divisors (1).

64919741 is an equidigital number, since it uses as much as digits as its factorization.

64919741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 64919741 is about 8057.2787589856. The cubic root of 64919741 is about 401.9070208138.

The spelling of 64919741 in words is "sixty-four million, nine hundred nineteen thousand, seven hundred forty-one".