63685403 has 4 divisors (see below), whose sum is σ = 64729488. Its totient is φ = 62641320.

The previous prime is 63685381. The next prime is 63685411. The reversal of 63685403 is 30458636.

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

It is a cyclic number.

It is not a de Polignac number, because 63685403 - 2⁶ = 63685339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63685493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521951 + ... + 522072.

It is an arithmetic number, because the mean of its divisors is an integer number (16182372).

Almost surely, 2^63685403 is an apocalyptic number.

63685403 is a deficient number, since it is larger than the sum of its proper divisors (1044085).

63685403 is a wasteful number, since it uses less digits than its factorization.

63685403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044084.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 63685403 is about 7980.3134650213. The cubic root of 63685403 is about 399.3435127339.

The spelling of 63685403 in words is "sixty-three million, six hundred eighty-five thousand, four hundred three".