63671903 has 4 divisors (see below), whose sum is σ = 63778800. Its totient is φ = 63565008.

The previous prime is 63671897. The next prime is 63671929. The reversal of 63671903 is 30917636.

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 63671903 - 2¹⁴ = 63655519 is a prime.

It is a super-2 number, since 2×63671903² = 8108222463282818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63671203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52550 + ... + 53747.

It is an arithmetic number, because the mean of its divisors is an integer number (15944700).

Almost surely, 2^63671903 is an apocalyptic number.

63671903 is a deficient number, since it is larger than the sum of its proper divisors (106897).

63671903 is a wasteful number, since it uses less digits than its factorization.

63671903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106896.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 63671903 is about 7979.4675887555. The cubic root of 63671903 is about 399.3152931936.

The spelling of 63671903 in words is "sixty-three million, six hundred seventy-one thousand, nine hundred three".