998620535 has 32 divisors (see below), whose sum is σ = 1326274560. Its totient is φ = 715795200.

The previous prime is 998620501. The next prime is 998620583. The reversal of 998620535 is 535026899.

It is not a de Polignac number, because 998620535 - 2¹⁰ = 998619511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998620535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2316770 + ... + 2317200.

It is an arithmetic number, because the mean of its divisors is an integer number (41446080).

Almost surely, 2^998620535 is an apocalyptic number.

998620535 is a deficient number, since it is larger than the sum of its proper divisors (327654025).

998620535 is a wasteful number, since it uses less digits than its factorization.

998620535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its (nonzero) digits is 583200, while the sum is 47.

The square root of 998620535 is about 31600.9578177624. The cubic root of 998620535 is about 999.5399667352.

The spelling of 998620535 in words is "nine hundred ninety-eight million, six hundred twenty thousand, five hundred thirty-five".