6977816 has 8 divisors (see below), whose sum is σ = 13083420. Its totient is φ = 3488904.

The previous prime is 6977813. The next prime is 6977827. The reversal of 6977816 is 6187796.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6977816² = 97379832259712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6977813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436106 + ... + 436121.

Almost surely, 2^6977816 is an apocalyptic number.

It is an amenable number.

6977816 is a deficient number, since it is larger than the sum of its proper divisors (6105604).

6977816 is a wasteful number, since it uses less digits than its factorization.

6977816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872233 (or 872229 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The square root of 6977816 is about 2641.5556022920. Note that the first 3 decimals coincide. The cubic root of 6977816 is about 191.0908260223.

The spelling of 6977816 in words is "six million, nine hundred seventy-seven thousand, eight hundred sixteen".