683595540 has 72 divisors (see below), whose sum is σ = 2145092040. Its totient is φ = 176004864.

The previous prime is 683595499. The next prime is 683595541. The reversal of 683595540 is 45595386.

683595540 is a `hidden beast` number, since 6 + 8 + 3 + 595 + 54 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7387524 + 676208016 = 2718^2 + 26004^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683595541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60259 + ... + 70698.

It is an arithmetic number, because the mean of its divisors is an integer number (29792945).

Almost surely, 2^683595540 is an apocalyptic number.

683595540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

683595540 is an abundant number, since it is smaller than the sum of its proper divisors (1461496500).

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

683595540 is a wasteful number, since it uses less digits than its factorization.

683595540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131001 (or 130996 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 683595540 is about 26145.6600605148. The cubic root of 683595540 is about 880.9131104013.

The spelling of 683595540 in words is "six hundred eighty-three million, five hundred ninety-five thousand, five hundred forty".