90656287 has 6 divisors (see below), whose sum is σ = 91573064. Its totient is φ = 89748600.

The previous prime is 90656263. The next prime is 90656329. The reversal of 90656287 is 78265609.

It is a de Polignac number, because none of the positive numbers 2^k-90656287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90656227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5758 + ... + 14644.

Almost surely, 2^90656287 is an apocalyptic number.

90656287 is a deficient number, since it is larger than the sum of its proper divisors (916777).

90656287 is an equidigital number, since it uses as much as digits as its factorization.

90656287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9089 (or 8988 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 90656287 is about 9521.3595142711. The cubic root of 90656287 is about 449.2271293291.

The spelling of 90656287 in words is "ninety million, six hundred fifty-six thousand, two hundred eighty-seven".