906502993 has 8 divisors (see below), whose sum is σ = 992763360. Its totient is φ = 820884480.

The previous prime is 906502957. The next prime is 906503021. The reversal of 906502993 is 399205609.

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 906502993 - 2²¹ = 904405841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906502193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157503 + ... + 163156.

It is an arithmetic number, because the mean of its divisors is an integer number (124095420).

Almost surely, 2^906502993 is an apocalyptic number.

It is an amenable number.

906502993 is a deficient number, since it is larger than the sum of its proper divisors (86260367).

906502993 is a wasteful number, since it uses less digits than its factorization.

906502993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320927.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 906502993 is about 30108.1881387771. The cubic root of 906502993 is about 967.8092027849.

The spelling of 906502993 in words is "nine hundred six million, five hundred two thousand, nine hundred ninety-three".