91066622 has 4 divisors (see below), whose sum is σ = 136599936. Its totient is φ = 45533310.

The previous prime is 91066621. The next prime is 91066627. The reversal of 91066622 is 22666019.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91066621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22766654 + ... + 22766657.

It is an arithmetic number, because the mean of its divisors is an integer number (34149984).

Almost surely, 2^91066622 is an apocalyptic number.

91066622 is a deficient number, since it is larger than the sum of its proper divisors (45533314).

91066622 is a wasteful number, since it uses less digits than its factorization.

91066622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45533313.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 91066622 is about 9542.8833169017. The cubic root of 91066622 is about 449.9038839987.

The spelling of 91066622 in words is "ninety-one million, sixty-six thousand, six hundred twenty-two".