91085701 has 4 divisors (see below), whose sum is σ = 104097952. Its totient is φ = 78073452.

The previous prime is 91085699. The next prime is 91085707. The reversal of 91085701 is 10758019.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91085701 - 2¹ = 91085699 is a prime.

It is a super-2 number, since 2×91085701² = 16593209853322802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91085707) 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, 6506115 + ... + 6506128.

It is an arithmetic number, because the mean of its divisors is an integer number (26024488).

Almost surely, 2^91085701 is an apocalyptic number.

It is an amenable number.

91085701 is a deficient number, since it is larger than the sum of its proper divisors (13012251).

91085701 is a wasteful number, since it uses less digits than its factorization.

91085701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13012250.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 91085701 is about 9543.8829100110. The cubic root of 91085701 is about 449.9353009864.

The spelling of 91085701 in words is "ninety-one million, eighty-five thousand, seven hundred one".