63820390 has 8 divisors (see below), whose sum is σ = 114876720. Its totient is φ = 25528152.

The previous prime is 63820357. The next prime is 63820447. The reversal of 63820390 is 9302836.

It is a happy number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3191010 + ... + 3191029.

It is an arithmetic number, because the mean of its divisors is an integer number (14359590).

Almost surely, 2^63820390 is an apocalyptic number.

63820390 is a deficient number, since it is larger than the sum of its proper divisors (51056330).

63820390 is a wasteful number, since it uses less digits than its factorization.

63820390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382046.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 63820390 is about 7988.7664880130. The cubic root of 63820390 is about 399.6254619125.

The spelling of 63820390 in words is "sixty-three million, eight hundred twenty thousand, three hundred ninety".