63940478 has 8 divisors (see below), whose sum is σ = 109612272. Its totient is φ = 27403056.

The previous prime is 63940469. The next prime is 63940501. The reversal of 63940478 is 87404936.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2283575 + ... + 2283602.

It is an arithmetic number, because the mean of its divisors is an integer number (13701534).

Almost surely, 2^63940478 is an apocalyptic number.

63940478 is a deficient number, since it is larger than the sum of its proper divisors (45671794).

63940478 is a wasteful number, since it uses less digits than its factorization.

63940478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567186.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 63940478 is about 7996.2790096394. The cubic root of 63940478 is about 399.8759573709.

The spelling of 63940478 in words is "sixty-three million, nine hundred forty thousand, four hundred seventy-eight".