1682713561 has 4 divisors (see below), whose sum is σ = 1706413824. Its totient is φ = 1659013300.

The previous prime is 1682713559. The next prime is 1682713619. The reversal of 1682713561 is 1653172861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1653172861 = 59 ⋅28019879.

It is a cyclic number.

It is not a de Polignac number, because 1682713561 - 2¹ = 1682713559 is a prime.

It is a super-3 number, since 3×1682713561³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1682713541) 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, 11850025 + ... + 11850166.

It is an arithmetic number, because the mean of its divisors is an integer number (426603456).

Almost surely, 2^1682713561 is an apocalyptic number.

It is an amenable number.

1682713561 is a deficient number, since it is larger than the sum of its proper divisors (23700263).

1682713561 is an equidigital number, since it uses as much as digits as its factorization.

1682713561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23700262.

The product of its digits is 60480, while the sum is 40.

The square root of 1682713561 is about 41020.8917626129. The cubic root of 1682713561 is about 1189.4240936694.

The spelling of 1682713561 in words is "one billion, six hundred eighty-two million, seven hundred thirteen thousand, five hundred sixty-one".