906776644 has 6 divisors (see below), whose sum is σ = 1586859134. Its totient is φ = 453388320.

The previous prime is 906776599. The next prime is 906776683. The reversal of 906776644 is 446677609.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 906732544 + 44100 = 30112^2 + 210^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113347077 + ... + 113347084.

Almost surely, 2^906776644 is an apocalyptic number.

It is an amenable number.

906776644 is a deficient number, since it is larger than the sum of its proper divisors (680082490).

906776644 is a wasteful number, since it uses less digits than its factorization.

906776644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226694165 (or 226694163 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The square root of 906776644 is about 30112.7322573027. The cubic root of 906776644 is about 967.9065789336.

The spelling of 906776644 in words is "nine hundred six million, seven hundred seventy-six thousand, six hundred forty-four".