91642036 has 24 divisors (see below), whose sum is σ = 170694216. Its totient is φ = 42900480.

The previous prime is 91642027. The next prime is 91642037. The reversal of 91642036 is 63024619.

It can be written as a sum of positive squares in 4 ways, for example, as 64705936 + 26936100 = 8044^2 + 5190^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91641989 and 91642007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91642037) 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, 9976 + ... + 16816.

It is an arithmetic number, because the mean of its divisors is an integer number (7112259).

Almost surely, 2^91642036 is an apocalyptic number.

It is an amenable number.

91642036 is a deficient number, since it is larger than the sum of its proper divisors (79052180).

91642036 is a wasteful number, since it uses less digits than its factorization.

91642036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7059 (or 7057 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 91642036 is about 9572.9846965301. The cubic root of 91642036 is about 450.8494834520.

The spelling of 91642036 in words is "ninety-one million, six hundred forty-two thousand, thirty-six".