6776406461 has 4 divisors (see below), whose sum is σ = 7392443424. Its totient is φ = 6160369500.

The previous prime is 6776406457. The next prime is 6776406521. The reversal of 6776406461 is 1646046776.

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.

It is a cyclic number.

It is not a de Polignac number, because 6776406461 - 2² = 6776406457 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 (6776456461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308018465 + ... + 308018486.

It is an arithmetic number, because the mean of its divisors is an integer number (1848110856).

Almost surely, 2^6776406461 is an apocalyptic number.

It is an amenable number.

6776406461 is a deficient number, since it is larger than the sum of its proper divisors (616036963).

6776406461 is a wasteful number, since it uses less digits than its factorization.

6776406461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616036962.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 6776406461 is about 82318.9313645409. The cubic root of 6776406461 is about 1892.3428167092.

The spelling of 6776406461 in words is "six billion, seven hundred seventy-six million, four hundred six thousand, four hundred sixty-one".