91667606 has 4 divisors (see below), whose sum is σ = 137501412. Its totient is φ = 45833802.

The previous prime is 91667599. The next prime is 91667663. The reversal of 91667606 is 60676619.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22916900 + ... + 22916903.

It is an arithmetic number, because the mean of its divisors is an integer number (34375353).

Almost surely, 2^91667606 is an apocalyptic number.

91667606 is a deficient number, since it is larger than the sum of its proper divisors (45833806).

91667606 is a wasteful number, since it uses less digits than its factorization.

91667606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45833805.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 91667606 is about 9574.3201325212. The cubic root of 91667606 is about 450.8914116244.

The spelling of 91667606 in words is "ninety-one million, six hundred sixty-seven thousand, six hundred six".