999999898700623 has 8 divisors (see below), whose sum is σ = 1000380862107648. Its totient is φ = 999618939388344.

The previous prime is 999999898700567. The next prime is 999999898700641. The reversal of 999999898700623 is 326007898999999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999999898700623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999999898700723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542350290 + ... + 544190992.

It is an arithmetic number, because the mean of its divisors is an integer number (125047607763456).

Almost surely, 2^{999999898700623} is an apocalyptic number.

999999898700623 is a deficient number, since it is larger than the sum of its proper divisors (380963407025).

999999898700623 is a wasteful number, since it uses less digits than its factorization.

999999898700623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047373.

The product of its (nonzero) digits is 77139724032, while the sum is 97.

The spelling of 999999898700623 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, eight hundred ninety-eight million, seven hundred thousand, six hundred twenty-three".