91487650 has 12 divisors (see below), whose sum is σ = 170167122. Its totient is φ = 36595040.

The previous prime is 91487623. The next prime is 91487651. The reversal of 91487650 is 5678419.

It can be written as a sum of positive squares in 3 ways, for example, as 88755241 + 2732409 = 9421^2 + 1653^2 .

It is not an unprimeable number, because it can be changed into a prime (91487651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 914827 + ... + 914926.

Almost surely, 2^91487650 is an apocalyptic number.

91487650 is a deficient number, since it is larger than the sum of its proper divisors (78679472).

91487650 is a wasteful number, since it uses less digits than its factorization.

91487650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829765 (or 1829760 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 91487650 is about 9564.9176682290. The cubic root of 91487650 is about 450.5961645788.

The spelling of 91487650 in words is "ninety-one million, four hundred eighty-seven thousand, six hundred fifty".