91965061 has 4 divisors (see below), whose sum is σ = 95136300. Its totient is φ = 88793824.

The previous prime is 91965059. The next prime is 91965067. The reversal of 91965061 is 16056919.

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 77334436 + 14630625 = 8794^2 + 3825^2 .

It is not a de Polignac number, because 91965061 - 2¹ = 91965059 is a prime.

It is a super-3 number, since 3×91965061³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91965061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91965067) 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, 1585576 + ... + 1585633.

It is an arithmetic number, because the mean of its divisors is an integer number (23784075).

Almost surely, 2^91965061 is an apocalyptic number.

It is an amenable number.

91965061 is a deficient number, since it is larger than the sum of its proper divisors (3171239).

91965061 is a wasteful number, since it uses less digits than its factorization.

91965061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171238.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 91965061 is about 9589.8415523928. The cubic root of 91965061 is about 451.3785887991.

The spelling of 91965061 in words is "ninety-one million, nine hundred sixty-five thousand, sixty-one".