998529601 has 2 divisors, whose sum is σ = 998529602. Its totient is φ = 998529600.

The previous prime is 998529547. The next prime is 998529661. The reversal of 998529601 is 106925899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 649026576 + 349503025 = 25476^2 + 18695^2 .

It is an emirp because it is prime and its reverse (106925899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998529601 - 2¹³ = 998521409 is a prime.

It is a super-2 number, since 2×998529601² = 1994122728146438402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (998529661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499264800 + 499264801.

It is an arithmetic number, because the mean of its divisors is an integer number (499264801).

Almost surely, 2^998529601 is an apocalyptic number.

It is an amenable number.

998529601 is a deficient number, since it is larger than the sum of its proper divisors (1).

998529601 is an equidigital number, since it uses as much as digits as its factorization.

998529601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 998529601 is about 31599.5189995038. The cubic root of 998529601 is about 999.5096265732.

The spelling of 998529601 in words is "nine hundred ninety-eight million, five hundred twenty-nine thousand, six hundred one".