63723530 has 32 divisors (see below), whose sum is σ = 130032000. Its totient is φ = 22289472.

The previous prime is 63723523. The next prime is 63723571. The reversal of 63723530 is 3532736.

63723530 = 2208² + 2209² + ... + 2220².

It is a junction number, because it is equal to n+sod(n) for n = 63723493 and 63723502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10430 + ... + 15369.

It is an arithmetic number, because the mean of its divisors is an integer number (4063500).

Almost surely, 2^63723530 is an apocalyptic number.

63723530 is an abundant number, since it is smaller than the sum of its proper divisors (66308470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63723530 is a wasteful number, since it uses less digits than its factorization.

63723530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25838.

The product of its (nonzero) digits is 11340, while the sum is 29.

The square root of 63723530 is about 7982.7019235344. The cubic root of 63723530 is about 399.4231894571.

The spelling of 63723530 in words is "sixty-three million, seven hundred twenty-three thousand, five hundred thirty".