1690716288 has 64 divisors (see below), whose sum is σ = 4547894400. Its totient is φ = 556428288.

The previous prime is 1690716259. The next prime is 1690716299. The reversal of 1690716288 is 8826170961.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2470 + ... + 58202.

It is an arithmetic number, because the mean of its divisors is an integer number (71060850).

Almost surely, 2^1690716288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1690716288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2273947200).

1690716288 is an abundant number, since it is smaller than the sum of its proper divisors (2857178112).

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

1690716288 is an equidigital number, since it uses as much as digits as its factorization.

1690716288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55829 (or 55817 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 1690716288 is about 41118.3205882731. The cubic root of 1690716288 is about 1191.3066850878.

The spelling of 1690716288 in words is "one billion, six hundred ninety million, seven hundred sixteen thousand, two hundred eighty-eight".