990606015 has 48 divisors (see below), whose sum is σ = 1969601088. Its totient is φ = 451173888.

The previous prime is 990606013. The next prime is 990606073. The reversal of 990606015 is 510606099.

It is not a de Polignac number, because 990606015 - 2¹ = 990606013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990606013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81579 + ... + 92931.

It is an arithmetic number, because the mean of its divisors is an integer number (41033356).

Almost surely, 2^990606015 is an apocalyptic number.

990606015 is a deficient number, since it is larger than the sum of its proper divisors (978995073).

990606015 is a wasteful number, since it uses less digits than its factorization.

990606015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11648 (or 11645 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 990606015 is about 31473.8941823220. The cubic root of 990606015 is about 996.8588149546.

The spelling of 990606015 in words is "nine hundred ninety million, six hundred six thousand, fifteen".