998766061 has 8 divisors (see below), whose sum is σ = 1035987480. Its totient is φ = 961730112.

The previous prime is 998766059. The next prime is 998766077. The reversal of 998766061 is 160667899.

It can be written as a sum of positive squares in 4 ways, for example, as 8468100 + 990297961 = 2910^2 + 31469^2 .

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 998766061 - 2¹ = 998766059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998766161) 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, 35350 + ... + 56983.

It is an arithmetic number, because the mean of its divisors is an integer number (129498435).

Almost surely, 2^998766061 is an apocalyptic number.

It is an amenable number.

998766061 is a deficient number, since it is larger than the sum of its proper divisors (37221419).

998766061 is a wasteful number, since it uses less digits than its factorization.

998766061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92735.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 998766061 is about 31603.2602906725. The cubic root of 998766061 is about 999.5885177055.

The spelling of 998766061 in words is "nine hundred ninety-eight million, seven hundred sixty-six thousand, sixty-one".