819625063 has 4 divisors (see below), whose sum is σ = 867838320. Its totient is φ = 771411808.

The previous prime is 819625013. The next prime is 819625091. The reversal of 819625063 is 360526918.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 819625063 - 2⁹ = 819624551 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819625013) 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 3 ways as a sum of consecutive naturals, for example, 24106603 + ... + 24106636.

It is an arithmetic number, because the mean of its divisors is an integer number (216959580).

Almost surely, 2^819625063 is an apocalyptic number.

819625063 is a deficient number, since it is larger than the sum of its proper divisors (48213257).

819625063 is a wasteful number, since it uses less digits than its factorization.

819625063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48213256.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 819625063 is about 28629.0946940346. The cubic root of 819625063 is about 935.8474831090.

It can be divided in two parts, 81962 and 5063, that added together give a square (87025 = 295²).

The spelling of 819625063 in words is "eight hundred nineteen million, six hundred twenty-five thousand, sixty-three".