1687216230 has 320 divisors, whose sum is σ = 5553377280. Its totient is φ = 359251200.

The previous prime is 1687216217. The next prime is 1687216247. The reversal of 1687216230 is 326127861.

1687216230 is a `hidden beast` number, since 1 + 6 + 8 + 7 + 21 + 623 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5097165 + ... + 5097495.

It is an arithmetic number, because the mean of its divisors is an integer number (17354304).

Almost surely, 2^1687216230 is an apocalyptic number.

1687216230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1687216230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2776688640).

1687216230 is an abundant number, since it is smaller than the sum of its proper divisors (3866161050).

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

1687216230 is a wasteful number, since it uses less digits than its factorization.

1687216230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1687216230 is about 41075.7377292240. The cubic root of 1687216230 is about 1190.4840508949.

The spelling of 1687216230 in words is "one billion, six hundred eighty-seven million, two hundred sixteen thousand, two hundred thirty".