63704427 has 4 divisors (see below), whose sum is σ = 84939240. Its totient is φ = 42469616.

The previous prime is 63704413. The next prime is 63704441. The reversal of 63704427 is 72440736.

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

It is an interprime number because it is at equal distance from previous prime (63704413) and next prime (63704441).

It is a cyclic number.

It is not a de Polignac number, because 63704427 - 2⁸ = 63704171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63704827) 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, 10617402 + ... + 10617407.

It is an arithmetic number, because the mean of its divisors is an integer number (21234810).

Almost surely, 2^63704427 is an apocalyptic number.

63704427 is a deficient number, since it is larger than the sum of its proper divisors (21234813).

63704427 is a wasteful number, since it uses less digits than its factorization.

63704427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21234812.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 63704427 is about 7981.5053091506. The cubic root of 63704427 is about 399.3832725234.

The spelling of 63704427 in words is "sixty-three million, seven hundred four thousand, four hundred twenty-seven".