63921037 has 8 divisors (see below), whose sum is σ = 67927032. Its totient is φ = 59942400.

The previous prime is 63921029. The next prime is 63921083. The reversal of 63921037 is 73012936.

It can be written as a sum of positive squares in 4 ways, for example, as 10426441 + 53494596 = 3229^2 + 7314^2 .

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 63921037 - 2³ = 63921029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63921097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1914 + ... + 11467.

It is an arithmetic number, because the mean of its divisors is an integer number (8490879).

Almost surely, 2^63921037 is an apocalyptic number.

It is an amenable number.

63921037 is a deficient number, since it is larger than the sum of its proper divisors (4005995).

63921037 is a wasteful number, since it uses less digits than its factorization.

63921037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13679.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 63921037 is about 7995.0632893055. The cubic root of 63921037 is about 399.8354260478.

The spelling of 63921037 in words is "sixty-three million, nine hundred twenty-one thousand, thirty-seven".