6978765 has 16 divisors (see below), whose sum is σ = 11276928. Its totient is φ = 3685056.

The previous prime is 6978761. The next prime is 6978779. The reversal of 6978765 is 5678796.

It is not a de Polignac number, because 6978765 - 2² = 6978761 is a prime.

It is an Ulam number.

6978765 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (704808).

Almost surely, 2^6978765 is an apocalyptic number.

It is an amenable number.

6978765 is a deficient number, since it is larger than the sum of its proper divisors (4298163).

6978765 is a wasteful number, since it uses less digits than its factorization.

6978765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628.

The product of its digits is 635040, while the sum is 48.

The square root of 6978765 is about 2641.7352251882. The cubic root of 6978765 is about 191.0994885692.

The spelling of 6978765 in words is "six million, nine hundred seventy-eight thousand, seven hundred sixty-five".