684703741 has 4 divisors (see below), whose sum is σ = 720740800. Its totient is φ = 648666684.

The previous prime is 684703709. The next prime is 684703757. The reversal of 684703741 is 147307486.

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: 147307486 = 2 ⋅73653743.

It is a cyclic number.

It is not a de Polignac number, because 684703741 - 2⁵ = 684703709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 684703694 and 684703703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684703771) 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, 18018501 + ... + 18018538.

It is an arithmetic number, because the mean of its divisors is an integer number (180185200).

Almost surely, 2^684703741 is an apocalyptic number.

It is an amenable number.

684703741 is a deficient number, since it is larger than the sum of its proper divisors (36037059).

684703741 is a wasteful number, since it uses less digits than its factorization.

684703741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36037058.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 684703741 is about 26166.8443072526. The cubic root of 684703741 is about 881.3888799045.

The spelling of 684703741 in words is "six hundred eighty-four million, seven hundred three thousand, seven hundred forty-one".