63729243 has 12 divisors (see below), whose sum is σ = 97468488. Its totient is φ = 39986880.

The previous prime is 63729233. The next prime is 63729247. The reversal of 63729243 is 34292736.

It is a happy number.

It is not a de Polignac number, because 63729243 - 2¹² = 63725147 is a prime.

It is a super-2 number, since 2×63729243² = 8122832826706098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63729198 and 63729207.

It is not an unprimeable number, because it can be changed into a prime (63729247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208113 + ... + 208418.

It is an arithmetic number, because the mean of its divisors is an integer number (8122374).

Almost surely, 2^63729243 is an apocalyptic number.

63729243 is a deficient number, since it is larger than the sum of its proper divisors (33739245).

63729243 is a wasteful number, since it uses less digits than its factorization.

63729243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416554 (or 416551 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 63729243 is about 7983.0597517493. The cubic root of 63729243 is about 399.4351255844.

The spelling of 63729243 in words is "sixty-three million, seven hundred twenty-nine thousand, two hundred forty-three".