91046670 has 128 divisors (see below), whose sum is σ = 270466560. Its totient is φ = 19284480.

The previous prime is 91046653. The next prime is 91046693. The reversal of 91046670 is 7664019.

It is a happy number.

It is a super-2 number, since 2×91046670² = 16578992236177800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 80952 + ... + 82068.

It is an arithmetic number, because the mean of its divisors is an integer number (2113020).

Almost surely, 2^91046670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91046670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135233280).

91046670 is an abundant number, since it is smaller than the sum of its proper divisors (179419890).

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

91046670 is a wasteful number, since it uses less digits than its factorization.

91046670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 91046670 is about 9541.8378732821. The cubic root of 91046670 is about 449.8710247661.

The spelling of 91046670 in words is "ninety-one million, forty-six thousand, six hundred seventy".