91074617 has 4 divisors (see below), whose sum is σ = 92793060. Its totient is φ = 89356176.

The previous prime is 91074589. The next prime is 91074637. The reversal of 91074617 is 71647019.

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 73342096 + 17732521 = 8564^2 + 4211^2 .

It is a cyclic number.

It is not a de Polignac number, because 91074617 - 2¹² = 91070521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91074637) 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, 859142 + ... + 859247.

It is an arithmetic number, because the mean of its divisors is an integer number (23198265).

Almost surely, 2^91074617 is an apocalyptic number.

It is an amenable number.

91074617 is a deficient number, since it is larger than the sum of its proper divisors (1718443).

91074617 is a wasteful number, since it uses less digits than its factorization.

91074617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718442.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 91074617 is about 9543.3022062596. The cubic root of 91074617 is about 449.9170497310.

The spelling of 91074617 in words is "ninety-one million, seventy-four thousand, six hundred seventeen".