64493756 has 12 divisors (see below), whose sum is σ = 113622600. Its totient is φ = 32030160.

The previous prime is 64493749. The next prime is 64493777. The reversal of 64493756 is 65739446.

64493756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×64493756³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53510 + ... + 54701.

It is an arithmetic number, because the mean of its divisors is an integer number (9468550).

Almost surely, 2^64493756 is an apocalyptic number.

It is an amenable number.

64493756 is a deficient number, since it is larger than the sum of its proper divisors (49128844).

64493756 is a wasteful number, since it uses less digits than its factorization.

64493756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108364 (or 108362 counting only the distinct ones).

The product of its digits is 544320, while the sum is 44.

The square root of 64493756 is about 8030.8004582358. The cubic root of 64493756 is about 401.0260242686.

The spelling of 64493756 in words is "sixty-four million, four hundred ninety-three thousand, seven hundred fifty-six".