1684196590756 has 27 divisors (see below), whose sum is σ = 2954971861569. Its totient is φ = 839924537328.

The previous prime is 1684196590729. The next prime is 1684196590759. The reversal of 1684196590756 is 6570956914861.

The square root of 1684196590756 is 1297766.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 787539104356 + 896657486400 = 887434^2 + 946920^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1684196590691 and 1684196590700.

It is not an unprimeable number, because it can be changed into a prime (1684196590759) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1575487390 + ... + 1575488458.

Almost surely, 2^{1684196590756} is an apocalyptic number.

1684196590756 is the 1297766-th square number.

It is an amenable number.

1684196590756 is a deficient number, since it is larger than the sum of its proper divisors (1270775270813).

1684196590756 is an frugal number, since it uses more digits than its factorization.

1684196590756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3356 (or 1678 counting only the distinct ones).

The product of its (nonzero) digits is 97977600, while the sum is 67.

The spelling of 1684196590756 in words is "one trillion, six hundred eighty-four billion, one hundred ninety-six million, five hundred ninety thousand, seven hundred fifty-six".