684623552 has 14 divisors (see below), whose sum is σ = 1358549988. Its totient is φ = 342311744.

The previous prime is 684623549. The next prime is 684623567. The reversal of 684623552 is 255326486.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5348558 + ... + 5348685.

Almost surely, 2^684623552 is an apocalyptic number.

It is an amenable number.

684623552 is a deficient number, since it is larger than the sum of its proper divisors (673926436).

684623552 is a wasteful number, since it uses less digits than its factorization.

684623552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10697255 (or 10697245 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The square root of 684623552 is about 26165.3119989042. The cubic root of 684623552 is about 881.3544706420.

The spelling of 684623552 in words is "six hundred eighty-four million, six hundred twenty-three thousand, five hundred fifty-two".