163698864 has 80 divisors (see below), whose sum is σ = 485802240. Its totient is φ = 46529280.

The previous prime is 163698859. The next prime is 163698869. The reversal of 163698864 is 468896361.

It is an interprime number because it is at equal distance from previous prime (163698859) and next prime (163698869).

It is not an unprimeable number, because it can be changed into a prime (163698869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69742 + ... + 72050.

It is an arithmetic number, because the mean of its divisors is an integer number (6072528).

Almost surely, 2^163698864 is an apocalyptic number.

163698864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163698864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242901120).

163698864 is an abundant number, since it is smaller than the sum of its proper divisors (322103376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163698864 is a wasteful number, since it uses less digits than its factorization.

163698864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538 (or 2532 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 163698864 is about 12794.4856872013. The cubic root of 163698864 is about 547.0351359463.

The spelling of 163698864 in words is "one hundred sixty-three million, six hundred ninety-eight thousand, eight hundred sixty-four".