90204773 has 8 divisors (see below), whose sum is σ = 91229592. Its totient is φ = 89185536.

The previous prime is 90204743. The next prime is 90204791. The reversal of 90204773 is 37740209.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3751969 + 86452804 = 1937^2 + 9298^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90204773 - 2¹⁰ = 90203749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90204743) 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, 36761 + ... + 39137.

It is an arithmetic number, because the mean of its divisors is an integer number (11403699).

Almost surely, 2^90204773 is an apocalyptic number.

It is an amenable number.

90204773 is a deficient number, since it is larger than the sum of its proper divisors (1024819).

90204773 is a wasteful number, since it uses less digits than its factorization.

90204773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 90204773 is about 9497.6193332856. The cubic root of 90204773 is about 448.4800952461.

The spelling of 90204773 in words is "ninety million, two hundred four thousand, seven hundred seventy-three".