64386693 has 12 divisors (see below), whose sum is σ = 106289248. Its totient is φ = 36792360.

The previous prime is 64386671. The next prime is 64386703. The reversal of 64386693 is 39668346.

It is not a de Polignac number, because 64386693 - 2⁹ = 64386181 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 (64386613) 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, 510943 + ... + 511068.

Almost surely, 2^64386693 is an apocalyptic number.

64386693 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

64386693 is a deficient number, since it is larger than the sum of its proper divisors (41902555).

64386693 is a wasteful number, since it uses less digits than its factorization.

64386693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022024 (or 1022021 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 64386693 is about 8024.1319156654. The cubic root of 64386693 is about 400.8039933208.

It can be divided in two parts, 6438 and 6693, that added together give a palindrome (13131).

The spelling of 64386693 in words is "sixty-four million, three hundred eighty-six thousand, six hundred ninety-three".