90627990 has 32 divisors (see below), whose sum is σ = 218012256. Its totient is φ = 24111360.

The previous prime is 90627947. The next prime is 90627991. The reversal of 90627990 is 9972609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90627991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10554 + ... + 17106.

It is an arithmetic number, because the mean of its divisors is an integer number (6812883).

Almost surely, 2^90627990 is an apocalyptic number.

90627990 is an abundant number, since it is smaller than the sum of its proper divisors (127384266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90627990 is a wasteful number, since it uses less digits than its factorization.

90627990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7024.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 90627990 is about 9519.8734235283. The cubic root of 90627990 is about 449.1803846287.

The spelling of 90627990 in words is "ninety million, six hundred twenty-seven thousand, nine hundred ninety".