91701690 has 64 divisors (see below), whose sum is σ = 230916096. Its totient is φ = 23262272.

The previous prime is 91701679. The next prime is 91701697. The reversal of 91701690 is 9610719.

It is a super-2 number, since 2×91701690² = 16818399897712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91701697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239239 + ... + 239621.

It is an arithmetic number, because the mean of its divisors is an integer number (3608064).

Almost surely, 2^91701690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91701690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115458048).

91701690 is an abundant number, since it is smaller than the sum of its proper divisors (139214406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91701690 is a wasteful number, since it uses less digits than its factorization.

91701690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 91701690 is about 9576.0999368219. The cubic root of 91701690 is about 450.9472884283.

The spelling of 91701690 in words is "ninety-one million, seven hundred one thousand, six hundred ninety".