64893493 has 24 divisors (see below), whose sum is σ = 81359520. Its totient is φ = 51438240.

The previous prime is 64893473. The next prime is 64893497. The reversal of 64893493 is 39439846.

It is not a de Polignac number, because 64893493 - 2⁵ = 64893461 is a prime.

It is a super-2 number, since 2×64893493² = 8422330867482098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64893497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39223 + ... + 40843.

It is an arithmetic number, because the mean of its divisors is an integer number (3389980).

Almost surely, 2^64893493 is an apocalyptic number.

It is an amenable number.

64893493 is a deficient number, since it is larger than the sum of its proper divisors (16466027).

64893493 is a wasteful number, since it uses less digits than its factorization.

64893493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697 (or 1690 counting only the distinct ones).

The product of its digits is 559872, while the sum is 46.

The square root of 64893493 is about 8055.6497565373. The cubic root of 64893493 is about 401.8528478849.

The spelling of 64893493 in words is "sixty-four million, eight hundred ninety-three thousand, four hundred ninety-three".