906776643 has 8 divisors (see below), whose sum is σ = 1209366288. Its totient is φ = 604352384.

The previous prime is 906776599. The next prime is 906776683. The reversal of 906776643 is 346677609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 906776643 - 2¹² = 906772547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 906776592 and 906776601.

It is not an unprimeable number, because it can be changed into a prime (906776683) 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 in 7 ways as a sum of consecutive naturals, for example, 27930 + ... + 50927.

It is an arithmetic number, because the mean of its divisors is an integer number (151170786).

Almost surely, 2^906776643 is an apocalyptic number.

906776643 is a deficient number, since it is larger than the sum of its proper divisors (302589645).

906776643 is a wasteful number, since it uses less digits than its factorization.

906776643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82693.

The product of its (nonzero) digits is 1143072, while the sum is 48.

The square root of 906776643 is about 30112.7322406985. The cubic root of 906776643 is about 967.9065785778.

The spelling of 906776643 in words is "nine hundred six million, seven hundred seventy-six thousand, six hundred forty-three".