91527642 has 12 divisors (see below), whose sum is σ = 198309930. Its totient is φ = 30509208.

The previous prime is 91527641. The next prime is 91527647. The reversal of 91527642 is 24672519.

91527642 is a `hidden beast` number, since 9 + 1 + 5 + 2 + 7 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 91412721 + 114921 = 9561^2 + 339^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91527597 and 91527606.

It is not an unprimeable number, because it can be changed into a prime (91527641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2542417 + ... + 2542452.

Almost surely, 2^91527642 is an apocalyptic number.

91527642 is an abundant number, since it is smaller than the sum of its proper divisors (106782288).

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

91527642 is a wasteful number, since it uses less digits than its factorization.

91527642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084877 (or 5084874 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 91527642 is about 9567.0079962337. The cubic root of 91527642 is about 450.6618113873.

The spelling of 91527642 in words is "ninety-one million, five hundred twenty-seven thousand, six hundred forty-two".