91140622 has 16 divisors (see below), whose sum is σ = 140407344. Its totient is φ = 44344000.

The previous prime is 91140619. The next prime is 91140629. The reversal of 91140622 is 22604119.

It is a super-2 number, since 2×91140622² = 16613225957093768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91140629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36597 + ... + 39007.

It is an arithmetic number, because the mean of its divisors is an integer number (8775459).

Almost surely, 2^91140622 is an apocalyptic number.

91140622 is a deficient number, since it is larger than the sum of its proper divisors (49266722).

91140622 is a wasteful number, since it uses less digits than its factorization.

91140622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 91140622 is about 9546.7597644436. The cubic root of 91140622 is about 450.0257137570.

The spelling of 91140622 in words is "ninety-one million, one hundred forty thousand, six hundred twenty-two".