684733426 has 16 divisors (see below), whose sum is σ = 1118539800. Its totient is φ = 312478848.

The previous prime is 684733393. The next prime is 684733451. The reversal of 684733426 is 624337486.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 220374025 + 464359401 = 14845^2 + 21549^2 .

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, 145641 + ... + 150268.

Almost surely, 2^684733426 is an apocalyptic number.

684733426 is a deficient number, since it is larger than the sum of its proper divisors (433806374).

684733426 is a wasteful number, since it uses less digits than its factorization.

684733426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296013.

The product of its digits is 580608, while the sum is 43.

The square root of 684733426 is about 26167.4115265534. The cubic root of 684733426 is about 881.4016171168.

The spelling of 684733426 in words is "six hundred eighty-four million, seven hundred thirty-three thousand, four hundred twenty-six".