684260141 has 4 divisors (see below), whose sum is σ = 685885884. Its totient is φ = 682634400.

The previous prime is 684260131. The next prime is 684260147. The reversal of 684260141 is 141062486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141062486 = 2 ⋅70531243.

It can be written as a sum of positive squares in 2 ways, for example, as 129846025 + 554414116 = 11395^2 + 23546^2 .

It is a cyclic number.

It is not a de Polignac number, because 684260141 - 2¹⁴ = 684243757 is a prime.

It is a super-2 number, since 2×684260141² = 936423881122679762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 684260098 and 684260107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684260147) 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, 812240 + ... + 813081.

It is an arithmetic number, because the mean of its divisors is an integer number (171471471).

Almost surely, 2^684260141 is an apocalyptic number.

It is an amenable number.

684260141 is a deficient number, since it is larger than the sum of its proper divisors (1625743).

684260141 is a wasteful number, since it uses less digits than its factorization.

684260141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625742.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 684260141 is about 26158.3665583308. The cubic root of 684260141 is about 881.1984965558.

The spelling of 684260141 in words is "six hundred eighty-four million, two hundred sixty thousand, one hundred forty-one".