820098106 has 4 divisors (see below), whose sum is σ = 1230147162. Its totient is φ = 410049052.

The previous prime is 820098079. The next prime is 820098119. The reversal of 820098106 is 601890028.

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., 780923025 + 39175081 = 27945^2 + 6259^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205024525 + ... + 205024528.

Almost surely, 2^820098106 is an apocalyptic number.

820098106 is a deficient number, since it is larger than the sum of its proper divisors (410049056).

820098106 is a wasteful number, since it uses less digits than its factorization.

820098106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410049055.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 820098106 is about 28637.3550803841. The cubic root of 820098106 is about 936.0274885698.

The spelling of 820098106 in words is "eight hundred twenty million, ninety-eight thousand, one hundred six".