998766715 has 16 divisors (see below), whose sum is σ = 1254149568. Its totient is φ = 762742656.

The previous prime is 998766653. The next prime is 998766721. The reversal of 998766715 is 517667899.

It is a cyclic number.

It is not a de Polignac number, because 998766715 - 2¹¹ = 998764667 is a prime.

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 998766715.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41127 + ... + 60736.

It is an arithmetic number, because the mean of its divisors is an integer number (78384348).

Almost surely, 2^998766715 is an apocalyptic number.

998766715 is a deficient number, since it is larger than the sum of its proper divisors (255382853).

998766715 is a wasteful number, since it uses less digits than its factorization.

998766715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101958.

The product of its digits is 5715360, while the sum is 58.

The square root of 998766715 is about 31603.2706377046. The cubic root of 998766715 is about 999.5887358850.

The spelling of 998766715 in words is "nine hundred ninety-eight million, seven hundred sixty-six thousand, seven hundred fifteen".