683121572 has 24 divisors (see below), whose sum is σ = 1367433984. Its totient is φ = 292511232.

The previous prime is 683121563. The next prime is 683121577. The reversal of 683121572 is 275121386.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (683121577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24053 + ... + 44099.

It is an arithmetic number, because the mean of its divisors is an integer number (56976416).

Almost surely, 2^683121572 is an apocalyptic number.

It is an amenable number.

683121572 is an abundant number, since it is smaller than the sum of its proper divisors (684312412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

683121572 is a wasteful number, since it uses less digits than its factorization.

683121572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21275 (or 21273 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 683121572 is about 26136.5944989013. The cubic root of 683121572 is about 880.7094709029.

The spelling of 683121572 in words is "six hundred eighty-three million, one hundred twenty-one thousand, five hundred seventy-two".