684378374 has 8 divisors (see below), whose sum is σ = 1048409568. Its totient is φ = 334908520.

The previous prime is 684378371. The next prime is 684378377. The reversal of 684378374 is 473873486.

It is an interprime number because it is at equal distance from previous prime (684378371) and next prime (684378377).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684378371) 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, 3640217 + ... + 3640404.

It is an arithmetic number, because the mean of its divisors is an integer number (131051196).

Almost surely, 2^684378374 is an apocalyptic number.

684378374 is a deficient number, since it is larger than the sum of its proper divisors (364031194).

684378374 is a wasteful number, since it uses less digits than its factorization.

684378374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7280670.

The product of its digits is 2709504, while the sum is 50.

The square root of 684378374 is about 26160.6264068734. The cubic root of 684378374 is about 881.2492475959.

The spelling of 684378374 in words is "six hundred eighty-four million, three hundred seventy-eight thousand, three hundred seventy-four".