906778 has 12 divisors (see below), whose sum is σ = 1394442. Its totient is φ = 442200.

The previous prime is 906767. The next prime is 906779. The reversal of 906778 is 877609.

It can be written as a sum of positive squares in only one way, i.e., 543169 + 363609 = 737^2 + 603^2 .

It is not an unprimeable number, because it can be changed into a prime (906779) 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 5 ways as a sum of consecutive naturals, for example, 8928 + ... + 9028.

2⁹⁰⁶⁷⁷⁸ is an apocalyptic number.

906778 is a deficient number, since it is larger than the sum of its proper divisors (487664).

906778 is a wasteful number, since it uses less digits than its factorization.

906778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 906778 is about 952.2489170380. The cubic root of 906778 is about 96.7907061405.

The spelling of 906778 in words is "nine hundred six thousand, seven hundred seventy-eight".