63660337 has 4 divisors (see below), whose sum is σ = 68557300. Its totient is φ = 58763376.

The previous prime is 63660323. The next prime is 63660349. The reversal of 63660337 is 73306636.

63660337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27468081 + 36192256 = 5241^2 + 6016^2 .

It is a cyclic number.

It is not a de Polignac number, because 63660337 - 2¹⁹ = 63136049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63660437) by changing a digit.

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, 2448462 + ... + 2448487.

It is an arithmetic number, because the mean of its divisors is an integer number (17139325).

Almost surely, 2^63660337 is an apocalyptic number.

It is an amenable number.

63660337 is a deficient number, since it is larger than the sum of its proper divisors (4896963).

63660337 is a wasteful number, since it uses less digits than its factorization.

63660337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4896962.

The product of its (nonzero) digits is 40824, while the sum is 34.

The square root of 63660337 is about 7978.7428207707. The cubic root of 63660337 is about 399.2911131909.

The spelling of 63660337 in words is "sixty-three million, six hundred sixty thousand, three hundred thirty-seven".