675113652409 has 27 divisors (see below), whose sum is σ = 793467781743. Its totient is φ = 572738153568.

The previous prime is 675113652401. The next prime is 675113652463. The reversal of 675113652409 is 904256311576.

The square root of 675113652409 is 821653.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 191988567225 + 483125085184 = 438165^2 + 695072^2 .

It is not a de Polignac number, because 675113652409 - 2³ = 675113652401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (675113652401) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 615417549 + ... + 615418645.

Almost surely, 2^675113652409 is an apocalyptic number.

675113652409 is the 821653-rd square number.

675113652409 is the 410827-th centered octagonal number.

It is an amenable number.

675113652409 is a deficient number, since it is larger than the sum of its proper divisors (118354129334).

675113652409 is an frugal number, since it uses more digits than its factorization.

675113652409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

Multiplying 675113652409 by its sum of digits (49), we get a square (33080568968041 = 5751571²).

675113652409 divided by its sum of digits (49) gives a square (13777829641 = 117379²).

The spelling of 675113652409 in words is "six hundred seventy-five billion, one hundred thirteen million, six hundred fifty-two thousand, four hundred nine".