91740770 has 16 divisors (see below), whose sum is σ = 180145728. Its totient is φ = 33360240.

The previous prime is 91740763. The next prime is 91740799. The reversal of 91740770 is 7704719.

It is a self number, because there is not a number n which added to its sum of digits gives 91740770.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416894 + ... + 417113.

It is an arithmetic number, because the mean of its divisors is an integer number (11259108).

Almost surely, 2^91740770 is an apocalyptic number.

91740770 is a deficient number, since it is larger than the sum of its proper divisors (88404958).

91740770 is a wasteful number, since it uses less digits than its factorization.

91740770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834025.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 91740770 is about 9578.1402161380. The cubic root of 91740770 is about 451.0113385645.

The spelling of 91740770 in words is "ninety-one million, seven hundred forty thousand, seven hundred seventy".