63223997698 has 4 divisors (see below), whose sum is σ = 94835996550. Its totient is φ = 31611998848.

The previous prime is 63223997677. The next prime is 63223997717. The reversal of 63223997698 is 89679932236.

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

It can be written as a sum of positive squares in only one way, i.e., 53901515889 + 9322481809 = 232167^2 + 96553^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15805999423 + ... + 15805999426.

Almost surely, 2^63223997698 is an apocalyptic number.

63223997698 is a deficient number, since it is larger than the sum of its proper divisors (31611998852).

63223997698 is a wasteful number, since it uses less digits than its factorization.

63223997698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31611998851.

The product of its digits is 52907904, while the sum is 64.

The spelling of 63223997698 in words is "sixty-three billion, two hundred twenty-three million, nine hundred ninety-seven thousand, six hundred ninety-eight".