684557640374 has 16 divisors (see below), whose sum is σ = 1052044670880. Its totient is φ = 333878677440.

The previous prime is 684557640353. The next prime is 684557640439. The reversal of 684557640374 is 473046755486.

684557640374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114794 + ... + 1175709.

It is an arithmetic number, because the mean of its divisors is an integer number (65752791930).

Almost surely, 2^684557640374 is an apocalyptic number.

684557640374 is a deficient number, since it is larger than the sum of its proper divisors (367487030506).

684557640374 is a wasteful number, since it uses less digits than its factorization.

684557640374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297015.

The product of its (nonzero) digits is 67737600, while the sum is 59.

The spelling of 684557640374 in words is "six hundred eighty-four billion, five hundred fifty-seven million, six hundred forty thousand, three hundred seventy-four".