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63967 = 471361
BaseRepresentation
bin1111100111011111
310020202011
433213133
54021332
61212051
7354331
oct174737
9106664
1063967
1144072
1231027
1323167
1419451
1513e47
hexf9df

63967 has 4 divisors (see below), whose sum is σ = 65376. Its totient is φ = 62560.

The previous prime is 63949. The next prime is 63977. The reversal of 63967 is 76936.

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 63967 - 27 = 63839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63907) 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, 634 + ... + 727.

It is an arithmetic number, because the mean of its divisors is an integer number (16344).

263967 is an apocalyptic number.

63967 is a deficient number, since it is larger than the sum of its proper divisors (1409).

63967 is a wasteful number, since it uses less digits than its factorization.

63967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its digits is 6804, while the sum is 31.

The square root of 63967 is about 252.9169824270. The cubic root of 63967 is about 39.9931238180.

Subtracting from 63967 its sum of digits (31), we obtain a palindrome (63936).

The spelling of 63967 in words is "sixty-three thousand, nine hundred sixty-seven".

Divisors: 1 47 1361 63967