64936493 has 16 divisors (see below), whose sum is σ = 68297856. Its totient is φ = 61689600.

The previous prime is 64936483. The next prime is 64936589. The reversal of 64936493 is 39463946.

It is a cyclic number.

It is not a de Polignac number, because 64936493 - 2⁴ = 64936477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64936463) 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 in 15 ways as a sum of consecutive naturals, for example, 429968 + ... + 430118.

It is an arithmetic number, because the mean of its divisors is an integer number (4268616).

Almost surely, 2^64936493 is an apocalyptic number.

It is an amenable number.

64936493 is a deficient number, since it is larger than the sum of its proper divisors (3361363).

64936493 is a wasteful number, since it uses less digits than its factorization.

64936493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404.

The product of its digits is 419904, while the sum is 44.

The square root of 64936493 is about 8058.3182488656. The cubic root of 64936493 is about 401.9415874304.

The spelling of 64936493 in words is "sixty-four million, nine hundred thirty-six thousand, four hundred ninety-three".