978605533 has 2 divisors, whose sum is σ = 978605534. Its totient is φ = 978605532.

The previous prime is 978605519. The next prime is 978605557. The reversal of 978605533 is 335506879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 960814009 + 17791524 = 30997^2 + 4218^2 .

It is a cyclic number.

It is not a de Polignac number, because 978605533 - 2¹⁷ = 978474461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978605513) by changing a digit.

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 as a sum of consecutive naturals, namely, 489302766 + 489302767.

It is an arithmetic number, because the mean of its divisors is an integer number (489302767).

Almost surely, 2^978605533 is an apocalyptic number.

It is an amenable number.

978605533 is a deficient number, since it is larger than the sum of its proper divisors (1).

978605533 is an equidigital number, since it uses as much as digits as its factorization.

978605533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 978605533 is about 31282.6714492225. The cubic root of 978605533 is about 992.8170396149.

The spelling of 978605533 in words is "nine hundred seventy-eight million, six hundred five thousand, five hundred thirty-three".