90683281 has 8 divisors (see below), whose sum is σ = 97864704. Its totient is φ = 83531280.

The previous prime is 90683279. The next prime is 90683297. The reversal of 90683281 is 18238609.

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 90683281 - 2¹ = 90683279 is a prime.

It is a super-2 number, since 2×90683281² = 16446914905849922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90683281.

It is not an unprimeable number, because it can be changed into a prime (90683081) 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, 721 + ... + 13486.

It is an arithmetic number, because the mean of its divisors is an integer number (12233088).

Almost surely, 2^90683281 is an apocalyptic number.

It is an amenable number.

90683281 is a deficient number, since it is larger than the sum of its proper divisors (7181423).

90683281 is a wasteful number, since it uses less digits than its factorization.

90683281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14711.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 90683281 is about 9522.7769584297. The cubic root of 90683281 is about 449.2717124982.

The spelling of 90683281 in words is "ninety million, six hundred eighty-three thousand, two hundred eighty-one".