683954981125 has 32 divisors (see below), whose sum is σ = 925945544160. Its totient is φ = 501387609600.

The previous prime is 683954981107. The next prime is 683954981189. The reversal of 683954981125 is 521189459386.

It can be written as a sum of positive squares in 16 ways, for example, as 644972822404 + 38982158721 = 803102^2 + 197439^2 .

It is not a de Polignac number, because 683954981125 - 2²¹ = 683952883973 is a prime.

It is a super-3 number, since 3×683954981125³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1313490 + ... + 1758739.

It is an arithmetic number, because the mean of its divisors is an integer number (28935798255).

Almost surely, 2^683954981125 is an apocalyptic number.

683954981125 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

683954981125 is a deficient number, since it is larger than the sum of its proper divisors (241990563035).

683954981125 is a wasteful number, since it uses less digits than its factorization.

683954981125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072394 (or 3072384 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 61.

The spelling of 683954981125 in words is "six hundred eighty-three billion, nine hundred fifty-four million, nine hundred eighty-one thousand, one hundred twenty-five".