90661030 has 16 divisors (see below), whose sum is σ = 164636064. Its totient is φ = 35943040.

The previous prime is 90661001. The next prime is 90661033. The reversal of 90661030 is 3016609.

It is a junction number, because it is equal to n+sod(n) for n = 90660986 and 90661004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90661033) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38986 + ... + 41245.

It is an arithmetic number, because the mean of its divisors is an integer number (10289754).

Almost surely, 2^90661030 is an apocalyptic number.

90661030 is a deficient number, since it is larger than the sum of its proper divisors (73975034).

90661030 is a wasteful number, since it uses less digits than its factorization.

90661030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80351.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 90661030 is about 9521.6085825873. The cubic root of 90661030 is about 449.2349634874.

Adding to 90661030 its reverse (3016609), we get a palindrome (93677639).

The spelling of 90661030 in words is "ninety million, six hundred sixty-one thousand, thirty".