6546690545 has 16 divisors (see below), whose sum is σ = 7878526992. Its totient is φ = 5222380800.

The previous prime is 6546690523. The next prime is 6546690551. The reversal of 6546690545 is 5450966456.

It can be written as a sum of positive squares in 8 ways, for example, as 293676769 + 6253013776 = 17137^2 + 79076^2 .

It is not a de Polignac number, because 6546690545 - 2¹² = 6546686449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6546690493 and 6546690502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4767479 + ... + 4768851.

It is an arithmetic number, because the mean of its divisors is an integer number (492407937).

Almost surely, 2^6546690545 is an apocalyptic number.

It is an amenable number.

6546690545 is a deficient number, since it is larger than the sum of its proper divisors (1331836447).

6546690545 is a wasteful number, since it uses less digits than its factorization.

6546690545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412.

The product of its (nonzero) digits is 3888000, while the sum is 50.

The square root of 6546690545 is about 80911.6218166463. The cubic root of 6546690545 is about 1870.7134594460.

The spelling of 6546690545 in words is "six billion, five hundred forty-six million, six hundred ninety thousand, five hundred forty-five".