6890787775 has 12 divisors (see below), whose sum is σ = 8551307592. Its totient is φ = 5508287840.

The previous prime is 6890787773. The next prime is 6890787809. The reversal of 6890787775 is 5777870986.

It is not a de Polignac number, because 6890787775 - 2¹ = 6890787773 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 (6890787773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75997 + ... + 139846.

It is an arithmetic number, because the mean of its divisors is an integer number (712608966).

Almost surely, 2^6890787775 is an apocalyptic number.

6890787775 is a deficient number, since it is larger than the sum of its proper divisors (1660519817).

6890787775 is a wasteful number, since it uses less digits than its factorization.

6890787775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217130 (or 217125 counting only the distinct ones).

The product of its (nonzero) digits is 41489280, while the sum is 64.

The square root of 6890787775 is about 83010.7690302891. The cubic root of 6890787775 is about 1902.9306366235.

The spelling of 6890787775 in words is "six billion, eight hundred ninety million, seven hundred eighty-seven thousand, seven hundred seventy-five".