90661752 has 24 divisors (see below), whose sum is σ = 245542440. Its totient is φ = 30220560.

The previous prime is 90661751. The next prime is 90661829. The reversal of 90661752 is 25716609.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90661751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 629524 + ... + 629667.

It is an arithmetic number, because the mean of its divisors is an integer number (10230935).

Almost surely, 2^90661752 is an apocalyptic number.

It is an amenable number.

90661752 is an abundant number, since it is smaller than the sum of its proper divisors (154880688).

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

90661752 is a wasteful number, since it uses less digits than its factorization.

90661752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259203 (or 1259196 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 90661752 is about 9521.6464962736. The cubic root of 90661752 is about 449.2361560129.

The spelling of 90661752 in words is "ninety million, six hundred sixty-one thousand, seven hundred fifty-two".