1713640 has 16 divisors (see below), whose sum is σ = 3855780. Its totient is φ = 685440.

The previous prime is 1713637. The next prime is 1713641. The reversal of 1713640 is 463171.

It can be written as a sum of positive squares in 2 ways, for example, as 1674436 + 39204 = 1294^2 + 198^2 .

It is not an unprimeable number, because it can be changed into a prime (1713641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21381 + ... + 21460.

2^1713640 is an apocalyptic number.

1713640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1713640 is an abundant number, since it is smaller than the sum of its proper divisors (2142140).

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

1713640 is a wasteful number, since it uses less digits than its factorization.

1713640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42852 (or 42848 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1713640 is about 1309.0607319754. The cubic root of 1713640 is about 119.6666675288. Note that the first 5 decimals are identical.

The spelling of 1713640 in words is "one million, seven hundred thirteen thousand, six hundred forty".