90965641 has 4 divisors (see below), whose sum is σ = 97963012. Its totient is φ = 83968272.

The previous prime is 90965639. The next prime is 90965681. The reversal of 90965641 is 14656909.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17606416 + 73359225 = 4196^2 + 8565^2 .

It is a cyclic number.

It is not a de Polignac number, because 90965641 - 2¹ = 90965639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90965594 and 90965603.

It is not an unprimeable number, because it can be changed into a prime (90965681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3498666 + ... + 3498691.

It is an arithmetic number, because the mean of its divisors is an integer number (24490753).

Almost surely, 2^90965641 is an apocalyptic number.

It is an amenable number.

90965641 is a deficient number, since it is larger than the sum of its proper divisors (6997371).

90965641 is a wasteful number, since it uses less digits than its factorization.

90965641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997370.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 90965641 is about 9537.5909432099. The cubic root of 90965641 is about 449.7375275954.

The spelling of 90965641 in words is "ninety million, nine hundred sixty-five thousand, six hundred forty-one".