63278067 has 8 divisors (see below), whose sum is σ = 84889024. Its totient is φ = 41926248.

The previous prime is 63278057. The next prime is 63278071. The reversal of 63278067 is 76087236.

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

It is not a de Polignac number, because 63278067 - 2⁷ = 63277939 is a prime.

It is a super-2 number, since 2×63278067² = 8008227526512978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63278057) 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, 64213 + ... + 65190.

It is an arithmetic number, because the mean of its divisors is an integer number (10611128).

Almost surely, 2^63278067 is an apocalyptic number.

63278067 is a deficient number, since it is larger than the sum of its proper divisors (21610957).

63278067 is a wasteful number, since it uses less digits than its factorization.

63278067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129569.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 63278067 is about 7954.7512217542. The cubic root of 63278067 is about 398.4902819641.

The spelling of 63278067 in words is "sixty-three million, two hundred seventy-eight thousand, sixty-seven".