63478805 has 16 divisors (see below), whose sum is σ = 82963440. Its totient is φ = 46345728.

The previous prime is 63478787. The next prime is 63478841. The reversal of 63478805 is 50887436.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 9647236 + 53831569 = 3106^2 + 7337^2 .

It is not a de Polignac number, because 63478805 - 2⁶ = 63478741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299 + ... + 11271.

It is an arithmetic number, because the mean of its divisors is an integer number (5185215).

Almost surely, 2^63478805 is an apocalyptic number.

63478805 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63478805 is a deficient number, since it is larger than the sum of its proper divisors (19484635).

63478805 is a wasteful number, since it uses less digits than its factorization.

63478805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11080.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 63478805 is about 7967.3587216844. The cubic root of 63478805 is about 398.9112161466.

The spelling of 63478805 in words is "sixty-three million, four hundred seventy-eight thousand, eight hundred five".