90663572 has 12 divisors (see below), whose sum is σ = 160297620. Its totient is φ = 44864256.

The previous prime is 90663557. The next prime is 90663577. The reversal of 90663572 is 27536609.

It can be written as a sum of positive squares in 2 ways, for example, as 57093136 + 33570436 = 7556^2 + 5794^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90663577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116447 + ... + 117222.

It is an arithmetic number, because the mean of its divisors is an integer number (13358135).

Almost surely, 2^90663572 is an apocalyptic number.

It is an amenable number.

90663572 is a deficient number, since it is larger than the sum of its proper divisors (69634048).

90663572 is a wasteful number, since it uses less digits than its factorization.

90663572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233770 (or 233768 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 90663572 is about 9521.7420675000. The cubic root of 90663572 is about 449.2391620742.

The spelling of 90663572 in words is "ninety million, six hundred sixty-three thousand, five hundred seventy-two".