999698505 has 64 divisors (see below), whose sum is σ = 1755274752. Its totient is φ = 482918400.

The previous prime is 999698467. The next prime is 999698543. The reversal of 999698505 is 505896999.

It is an interprime number because it is at equal distance from previous prime (999698467) and next prime (999698543).

It is not a de Polignac number, because 999698505 - 2¹⁴ = 999682121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3801004 + ... + 3801266.

It is an arithmetic number, because the mean of its divisors is an integer number (27426168).

Almost surely, 2^999698505 is an apocalyptic number.

It is an amenable number.

999698505 is a deficient number, since it is larger than the sum of its proper divisors (755576247).

999698505 is a wasteful number, since it uses less digits than its factorization.

999698505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 7873200, while the sum is 60.

The square root of 999698505 is about 31618.0091878031. The cubic root of 999698505 is about 999.8994915651.

The spelling of 999698505 in words is "nine hundred ninety-nine million, six hundred ninety-eight thousand, five hundred five".