6696547643 has 4 divisors (see below), whose sum is σ = 6702653160. Its totient is φ = 6690442128.

The previous prime is 6696547633. The next prime is 6696547657. The reversal of 6696547643 is 3467456966.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6696547643 - 2³² = 2401580347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6696547633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3051113 + ... + 3053306.

It is an arithmetic number, because the mean of its divisors is an integer number (1675663290).

Almost surely, 2^6696547643 is an apocalyptic number.

6696547643 is a deficient number, since it is larger than the sum of its proper divisors (6105517).

6696547643 is a wasteful number, since it uses less digits than its factorization.

6696547643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105516.

The product of its digits is 19595520, while the sum is 56.

The square root of 6696547643 is about 81832.4363745819. The cubic root of 6696547643 is about 1884.8797745957.

The spelling of 6696547643 in words is "six billion, six hundred ninety-six million, five hundred forty-seven thousand, six hundred forty-three".