981006785 has 16 divisors (see below), whose sum is σ = 1287696960. Its totient is φ = 711531840.

The previous prime is 981006737. The next prime is 981006821. The reversal of 981006785 is 587600189.

It is a happy number.

It is not a de Polignac number, because 981006785 - 2⁸ = 981006529 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3395 + ... + 44424.

It is an arithmetic number, because the mean of its divisors is an integer number (80481060).

Almost surely, 2^981006785 is an apocalyptic number.

It is an amenable number.

981006785 is a deficient number, since it is larger than the sum of its proper divisors (306690175).

981006785 is a wasteful number, since it uses less digits than its factorization.

981006785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48208.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 981006785 is about 31321.0278407335. The cubic root of 981006785 is about 993.6284174922.

The spelling of 981006785 in words is "nine hundred eighty-one million, six thousand, seven hundred eighty-five".