90633736 has 8 divisors (see below), whose sum is σ = 169938270. Its totient is φ = 45316864.

The previous prime is 90633733. The next prime is 90633737. The reversal of 90633736 is 63733609.

It can be written as a sum of positive squares in only one way, i.e., 88472836 + 2160900 = 9406^2 + 1470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 90633695 and 90633704.

It is not an unprimeable number, because it can be changed into a prime (90633733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5664601 + ... + 5664616.

Almost surely, 2^90633736 is an apocalyptic number.

It is an amenable number.

90633736 is a deficient number, since it is larger than the sum of its proper divisors (79304534).

90633736 is a wasteful number, since it uses less digits than its factorization.

90633736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11329223 (or 11329219 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 37.

The square root of 90633736 is about 9520.1752084717. The cubic root of 90633736 is about 449.1898774133.

The spelling of 90633736 in words is "ninety million, six hundred thirty-three thousand, seven hundred thirty-six".