64813741 has 12 divisors (see below), whose sum is σ = 69395508. Its totient is φ = 60518912.

The previous prime is 64813739. The next prime is 64813789. The reversal of 64813741 is 14731846.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 75625 + 64738116 = 275^2 + 8046^2 .

It is not a de Polignac number, because 64813741 - 2¹ = 64813739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64813697 and 64813706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64813711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38775 + ... + 40411.

It is an arithmetic number, because the mean of its divisors is an integer number (5782959).

Almost surely, 2^64813741 is an apocalyptic number.

It is an amenable number.

64813741 is a deficient number, since it is larger than the sum of its proper divisors (4581767).

64813741 is a wasteful number, since it uses less digits than its factorization.

64813741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1791 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 64813741 is about 8050.6981684820. The cubic root of 64813741 is about 401.6881590247.

The spelling of 64813741 in words is "sixty-four million, eight hundred thirteen thousand, seven hundred forty-one".