63937990 has 16 divisors (see below), whose sum is σ = 117765648. Its totient is φ = 24980256.

The previous prime is 63937987. The next prime is 63938009. The reversal of 63937990 is 9973936.

It is a self number, because there is not a number n which added to its sum of digits gives 63937990.

It is a congruent number.

It is an unprimeable number.

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, 73917 + ... + 74776.

It is an arithmetic number, because the mean of its divisors is an integer number (7360353).

Almost surely, 2^63937990 is an apocalyptic number.

63937990 is a deficient number, since it is larger than the sum of its proper divisors (53827658).

63937990 is a wasteful number, since it uses less digits than its factorization.

63937990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148743.

The product of its (nonzero) digits is 275562, while the sum is 46.

The square root of 63937990 is about 7996.1234357656. The cubic root of 63937990 is about 399.8707707540.

The spelling of 63937990 in words is "sixty-three million, nine hundred thirty-seven thousand, nine hundred ninety".