683551138 has 4 divisors (see below), whose sum is σ = 1025326710. Its totient is φ = 341775568.

The previous prime is 683551129. The next prime is 683551171. The reversal of 683551138 is 831155386.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 344733489 + 338817649 = 18567^2 + 18407^2 .

It is a super-2 number, since 2×683551138² = 934484316522190088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 683551138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170887783 + ... + 170887786.

Almost surely, 2^683551138 is an apocalyptic number.

683551138 is a deficient number, since it is larger than the sum of its proper divisors (341775572).

683551138 is a wasteful number, since it uses less digits than its factorization.

683551138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341775571.

The product of its digits is 86400, while the sum is 40.

The square root of 683551138 is about 26144.8109191862. The cubic root of 683551138 is about 880.8940371586.

The spelling of 683551138 in words is "six hundred eighty-three million, five hundred fifty-one thousand, one hundred thirty-eight".