675121020 has 144 divisors (see below), whose sum is σ = 2209566240. Its totient is φ = 153570816.

The previous prime is 675120997. The next prime is 675121033. The reversal of 675121020 is 20121576.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 813966 + ... + 814794.

It is an arithmetic number, because the mean of its divisors is an integer number (15344210).

Almost surely, 2^675121020 is an apocalyptic number.

675121020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 675121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104783120).

675121020 is an abundant number, since it is smaller than the sum of its proper divisors (1534445220).

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

675121020 is a wasteful number, since it uses less digits than its factorization.

675121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 675121020 is about 25983.0910401361. The cubic root of 675121020 is about 877.2577427203.

Adding to 675121020 its reverse (20121576), we get a palindrome (695242596).

The spelling of 675121020 in words is "six hundred seventy-five million, one hundred twenty-one thousand, twenty".