91074061 has 4 divisors (see below), whose sum is σ = 98079772. Its totient is φ = 84068352.

The previous prime is 91074059. The next prime is 91074073. The reversal of 91074061 is 16047019.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5788836 + 85285225 = 2406^2 + 9235^2 .

It is a cyclic number.

It is not a de Polignac number, because 91074061 - 2¹ = 91074059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91074031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3502836 + ... + 3502861.

It is an arithmetic number, because the mean of its divisors is an integer number (24519943).

Almost surely, 2^91074061 is an apocalyptic number.

It is an amenable number.

91074061 is a deficient number, since it is larger than the sum of its proper divisors (7005711).

91074061 is a wasteful number, since it uses less digits than its factorization.

91074061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7005710.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 91074061 is about 9543.2730758372. The cubic root of 91074061 is about 449.9161341653.

The spelling of 91074061 in words is "ninety-one million, seventy-four thousand, sixty-one".