63671914 has 16 divisors (see below), whose sum is σ = 97728840. Its totient is φ = 31104000.

The previous prime is 63671897. The next prime is 63671929. The reversal of 63671914 is 41917636.

It can be written as a sum of positive squares in 4 ways, for example, as 46308025 + 17363889 = 6805^2 + 4167^2 .

It is a super-2 number, since 2×63671914² = 8108225264846792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13914 + ... + 17914.

Almost surely, 2^63671914 is an apocalyptic number.

63671914 is a deficient number, since it is larger than the sum of its proper divisors (34056926).

63671914 is a wasteful number, since it uses less digits than its factorization.

63671914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185.

The product of its digits is 27216, while the sum is 37.

The square root of 63671914 is about 7979.4682780245. The cubic root of 63671914 is about 399.3153161889.

It can be divided in two parts, 6367 and 1914, that added together give a square (8281 = 91²).

The spelling of 63671914 in words is "sixty-three million, six hundred seventy-one thousand, nine hundred fourteen".