906644347 has 4 divisors (see below), whose sum is σ = 1036164976. Its totient is φ = 777123720.

The previous prime is 906644329. The next prime is 906644359. The reversal of 906644347 is 743446609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743446609 = 71 ⋅10471079.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-906644347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (906614347) 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, 64760304 + ... + 64760317.

It is an arithmetic number, because the mean of its divisors is an integer number (259041244).

Almost surely, 2^906644347 is an apocalyptic number.

906644347 is a deficient number, since it is larger than the sum of its proper divisors (129520629).

906644347 is a wasteful number, since it uses less digits than its factorization.

906644347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129520628.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 906644347 is about 30110.5354817878. The cubic root of 906644347 is about 967.8595047302.

The spelling of 906644347 in words is "nine hundred six million, six hundred forty-four thousand, three hundred forty-seven".