63778287 has 8 divisors (see below), whose sum is σ = 88735104. Its totient is φ = 40670168.

The previous prime is 63778283. The next prime is 63778291. The reversal of 63778287 is 78287736.

It is an interprime number because it is at equal distance from previous prime (63778283) and next prime (63778291).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63778287 - 2² = 63778283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63778283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462093 + ... + 462230.

It is an arithmetic number, because the mean of its divisors is an integer number (11091888).

Almost surely, 2^63778287 is an apocalyptic number.

63778287 is a deficient number, since it is larger than the sum of its proper divisors (24956817).

63778287 is a wasteful number, since it uses less digits than its factorization.

63778287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924349.

The product of its digits is 790272, while the sum is 48.

The square root of 63778287 is about 7986.1309155310. The cubic root of 63778287 is about 399.5375635039.

The spelling of 63778287 in words is "sixty-three million, seven hundred seventy-eight thousand, two hundred eighty-seven".