63478723 has 8 divisors (see below), whose sum is σ = 79142400. Its totient is φ = 49463880.

The previous prime is 63478721. The next prime is 63478733. The reversal of 63478723 is 32787436.

It is a happy number.

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 63478723 - 2¹ = 63478721 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63478721) 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, 412123 + ... + 412276.

It is an arithmetic number, because the mean of its divisors is an integer number (9892800).

Almost surely, 2^63478723 is an apocalyptic number.

63478723 is a deficient number, since it is larger than the sum of its proper divisors (15663677).

63478723 is a wasteful number, since it uses less digits than its factorization.

63478723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824417.

The product of its digits is 169344, while the sum is 40.

The square root of 63478723 is about 7967.3535756862. The cubic root of 63478723 is about 398.9110443794.

The spelling of 63478723 in words is "sixty-three million, four hundred seventy-eight thousand, seven hundred twenty-three".