63773121 has 8 divisors (see below), whose sum is σ = 86425024. Its totient is φ = 41818320.

The previous prime is 63773113. The next prime is 63773131. The reversal of 63773121 is 12137736.

63773121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63773121 - 2³ = 63773113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63773131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174061 + ... + 174426.

It is an arithmetic number, because the mean of its divisors is an integer number (10803128).

Almost surely, 2^63773121 is an apocalyptic number.

63773121 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

63773121 is a deficient number, since it is larger than the sum of its proper divisors (22651903).

63773121 is a wasteful number, since it uses less digits than its factorization.

63773121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348551.

The product of its digits is 5292, while the sum is 30.

The square root of 63773121 is about 7985.8074732615. The cubic root of 63773121 is about 399.5267757846.

The spelling of 63773121 in words is "sixty-three million, seven hundred seventy-three thousand, one hundred twenty-one".