20220698 has 4 divisors (see below), whose sum is σ = 30331050. Its totient is φ = 10110348.

The previous prime is 20220689. The next prime is 20220713. The reversal of 20220698 is 89602202.

It is a happy number.

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., 19775809 + 444889 = 4447^2 + 667^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20220698.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055173 + ... + 5055176.

Almost surely, 2^20220698 is an apocalyptic number.

20220698 is a deficient number, since it is larger than the sum of its proper divisors (10110352).

20220698 is a wasteful number, since it uses less digits than its factorization.

20220698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110351.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20220698 is about 4496.7430435817. The cubic root of 20220698 is about 272.4365556644.

The spelling of 20220698 in words is "twenty million, two hundred twenty thousand, six hundred ninety-eight".