63573723 has 6 divisors (see below), whose sum is σ = 91828724. Its totient is φ = 42382476.

The previous prime is 63573709. The next prime is 63573779. The reversal of 63573723 is 32737536.

It is a happy number.

63573723 is a `hidden beast` number, since 63 + 573 + 7 + 23 = 666.

It is not a de Polignac number, because 63573723 - 2⁴ = 63573707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63553723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3531865 + ... + 3531882.

Almost surely, 2^63573723 is an apocalyptic number.

63573723 is a deficient number, since it is larger than the sum of its proper divisors (28255001).

63573723 is a wasteful number, since it uses less digits than its factorization.

63573723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7063753 (or 7063750 counting only the distinct ones).

The product of its digits is 79380, while the sum is 36.

The square root of 63573723 is about 7973.3131758385. The cubic root of 63573723 is about 399.1099438859.

The spelling of 63573723 in words is "sixty-three million, five hundred seventy-three thousand, seven hundred twenty-three".