90606870 has 64 divisors (see below), whose sum is σ = 244981440. Its totient is φ = 23825664.

The previous prime is 90606869. The next prime is 90606871. The reversal of 90606870 is 7860609.

It is an interprime number because it is at equal distance from previous prime (90606869) and next prime (90606871).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90606871) 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 31 ways as a sum of consecutive naturals, for example, 17412 + ... + 22008.

It is an arithmetic number, because the mean of its divisors is an integer number (3827835).

Almost surely, 2^90606870 is an apocalyptic number.

90606870 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90606870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122490720).

90606870 is an abundant number, since it is smaller than the sum of its proper divisors (154374570).

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

90606870 is a wasteful number, since it uses less digits than its factorization.

90606870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686 (or 4680 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 90606870 is about 9518.7641004492. The cubic root of 90606870 is about 449.1454894978.

The spelling of 90606870 in words is "ninety million, six hundred six thousand, eight hundred seventy".