63728467 has 16 divisors (see below), whose sum is σ = 73718784. Its totient is φ = 54540000.

The previous prime is 63728459. The next prime is 63728477. The reversal of 63728467 is 76482736.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 63728467 - 2³ = 63728459 is a prime.

It is a super-2 number, since 2×63728467² = 8122635012340178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63728417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10092 + ... + 15142.

It is an arithmetic number, because the mean of its divisors is an integer number (4607424).

Almost surely, 2^63728467 is an apocalyptic number.

63728467 is a deficient number, since it is larger than the sum of its proper divisors (9990317).

63728467 is a wasteful number, since it uses less digits than its factorization.

63728467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130.

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

The square root of 63728467 is about 7983.0111486832. The cubic root of 63728467 is about 399.4335043354.

The spelling of 63728467 in words is "sixty-three million, seven hundred twenty-eight thousand, four hundred sixty-seven".