63427687 has 4 divisors (see below), whose sum is σ = 64191960. Its totient is φ = 62663416.

The previous prime is 63427673. The next prime is 63427699. The reversal of 63427687 is 78672436.

It is a happy number.

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 63427687 - 2²³ = 55039079 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 (63427387) 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, 382012 + ... + 382177.

It is an arithmetic number, because the mean of its divisors is an integer number (16047990).

Almost surely, 2^63427687 is an apocalyptic number.

63427687 is a deficient number, since it is larger than the sum of its proper divisors (764273).

63427687 is an equidigital number, since it uses as much as digits as its factorization.

63427687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764272.

The product of its digits is 338688, while the sum is 43.

The square root of 63427687 is about 7964.1501115938. The cubic root of 63427687 is about 398.8041094275.

The spelling of 63427687 in words is "sixty-three million, four hundred twenty-seven thousand, six hundred eighty-seven".