63440704 has 14 divisors (see below), whose sum is σ = 125890274. Its totient is φ = 31720320.

The previous prime is 63440683. The next prime is 63440711. The reversal of 63440704 is 40704436.

It can be written as a sum of positive squares in only one way, i.e., 61591104 + 1849600 = 7848^2 + 1360^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495567 + ... + 495694.

Almost surely, 2^63440704 is an apocalyptic number.

63440704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

63440704 is a deficient number, since it is larger than the sum of its proper divisors (62449570).

63440704 is an equidigital number, since it uses as much as digits as its factorization.

63440704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991273 (or 991263 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 63440704 is about 7964.9672943459. The cubic root of 63440704 is about 398.8313891968.

The spelling of 63440704 in words is "sixty-three million, four hundred forty thousand, seven hundred four".