91670752 has 48 divisors (see below), whose sum is σ = 186892272. Its totient is φ = 44231680.

The previous prime is 91670737. The next prime is 91670753. The reversal of 91670752 is 25707619.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91670753) 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, 140058 + ... + 140710.

It is an arithmetic number, because the mean of its divisors is an integer number (3893589).

Almost surely, 2^91670752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91670752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93446136).

91670752 is an abundant number, since it is smaller than the sum of its proper divisors (95221520).

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

91670752 is a wasteful number, since it uses less digits than its factorization.

91670752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 91670752 is about 9574.4844247615. The cubic root of 91670752 is about 450.8965697103.

It can be divided in two parts, 9 and 1670752, that added together give a palindrome (1670761).

The spelling of 91670752 in words is "ninety-one million, six hundred seventy thousand, seven hundred fifty-two".