64799744 has 22 divisors (see below), whose sum is σ = 129538254. Its totient is φ = 32399360.

The previous prime is 64799729. The next prime is 64799789. The reversal of 64799744 is 44799746.

It can be written as a sum of positive squares in only one way, i.e., 44729344 + 20070400 = 6688^2 + 4480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64799692 and 64799701.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30617 + ... + 32664.

Almost surely, 2^64799744 is an apocalyptic number.

64799744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64799744 is a deficient number, since it is larger than the sum of its proper divisors (64738510).

64799744 is an equidigital number, since it uses as much as digits as its factorization.

64799744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63301 (or 63283 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 50.

The square root of 64799744 is about 8049.8288180557. The cubic root of 64799744 is about 401.6592411139.

The spelling of 64799744 in words is "sixty-four million, seven hundred ninety-nine thousand, seven hundred forty-four".