998642960701 has 4 divisors (see below), whose sum is σ = 998645459004. Its totient is φ = 998640462400.

The previous prime is 998642960681. The next prime is 998642960797. The reversal of 998642960701 is 107069246899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 725350305625 + 273292655076 = 851675^2 + 522774^2 .

It is a 3-Lehmer number, since φ(998642960701) divides (998642960701-1)³.

It is a cyclic number.

It is not a de Polignac number, because 998642960701 - 2⁷ = 998642960573 is a prime.

It is a super-2 number, since 2×998642960701² (a number of 25 digits) contains 22 as substring.

It is a deceptive number, since it divides R_998642960700.

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 998642960701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998642964701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499660 + ... + 1498981.

It is an arithmetic number, because the mean of its divisors is an integer number (249661364751).

It is a Poulet number, since it divides 2^998642960700-1.

Almost surely, 2^998642960701 is an apocalyptic number.

998642960701 is the 499661-st decagonal number.

It is an amenable number.

998642960701 is a deficient number, since it is larger than the sum of its proper divisors (2498303).

998642960701 is a wasteful number, since it uses less digits than its factorization.

998642960701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498302.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 998642960701 in words is "nine hundred ninety-eight billion, six hundred forty-two million, nine hundred sixty thousand, seven hundred one".