7143747687 has 6 divisors (see below), whose sum is σ = 10318746672. Its totient is φ = 4762498452.

The previous prime is 7143747673. The next prime is 7143747697. The reversal of 7143747687 is 7867473417.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-7143747687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7143747607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 396874863 + ... + 396874880.

It is an arithmetic number, because the mean of its divisors is an integer number (1719791112).

Almost surely, 2^7143747687 is an apocalyptic number.

7143747687 is a deficient number, since it is larger than the sum of its proper divisors (3174998985).

7143747687 is a wasteful number, since it uses less digits than its factorization.

7143747687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793749749 (or 793749746 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 54.

The square root of 7143747687 is about 84520.6938388464. The cubic root of 7143747687 is about 1925.9368183840.

The spelling of 7143747687 in words is "seven billion, one hundred forty-three million, seven hundred forty-seven thousand, six hundred eighty-seven".