998064634 has 24 divisors (see below), whose sum is σ = 1754837568. Its totient is φ = 424471320.

The previous prime is 998064607. The next prime is 998064643. The reversal of 998064634 is 436460899.

It is a super-2 number, since 2×998064634² = 1992266027283107912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26034 + ... + 51709.

It is an arithmetic number, because the mean of its divisors is an integer number (73118232).

Almost surely, 2^998064634 is an apocalyptic number.

998064634 is a deficient number, since it is larger than the sum of its proper divisors (756772934).

998064634 is a wasteful number, since it uses less digits than its factorization.

998064634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77890 (or 77883 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 998064634 is about 31592.1609580605. The cubic root of 998064634 is about 999.3544613695.

The spelling of 998064634 in words is "nine hundred ninety-eight million, sixty-four thousand, six hundred thirty-four".