90820106 has 8 divisors (see below), whose sum is σ = 146709444. Its totient is φ = 41916960.

The previous prime is 90820099. The next prime is 90820151. The reversal of 90820106 is 60102809.

It can be written as a sum of positive squares in 2 ways, for example, as 76720081 + 14100025 = 8759^2 + 3755^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 3493081 = 90820106 / (9 + 0 + 8 + 2 + 0 + 1 + 0 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1746515 + ... + 1746566.

Almost surely, 2^90820106 is an apocalyptic number.

90820106 is a deficient number, since it is larger than the sum of its proper divisors (55889338).

90820106 is a wasteful number, since it uses less digits than its factorization.

90820106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493096.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 90820106 is about 9529.9583419866. The cubic root of 90820106 is about 449.4975560815.

The spelling of 90820106 in words is "ninety million, eight hundred twenty thousand, one hundred six".