6945145877 has 4 divisors (see below), whose sum is σ = 6945312576. Its totient is φ = 6944979180.

The previous prime is 6945145873. The next prime is 6945145951. The reversal of 6945145877 is 7785415496.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6945145877 - 2² = 6945145873 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945145871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39602 + ... + 124332.

It is an arithmetic number, because the mean of its divisors is an integer number (1736328144).

Almost surely, 2^6945145877 is an apocalyptic number.

It is an amenable number.

6945145877 is a deficient number, since it is larger than the sum of its proper divisors (166699).

6945145877 is an equidigital number, since it uses as much as digits as its factorization.

6945145877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166698.

The product of its digits is 8467200, while the sum is 56.

The square root of 6945145877 is about 83337.5418223984. The cubic root of 6945145877 is about 1907.9213039465.

The spelling of 6945145877 in words is "six billion, nine hundred forty-five million, one hundred forty-five thousand, eight hundred seventy-seven".