974778 has 16 divisors (see below), whose sum is σ = 2228160. Its totient is φ = 278496.

The previous prime is 974773. The next prime is 974803. The reversal of 974778 is 877479.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 23209 = 974778 / (9 + 7 + 4 + 7 + 7 + 8).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974773) by changing a digit.

974778 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11563 + ... + 11646.

It is an arithmetic number, because the mean of its divisors is an integer number (139260).

2⁹⁷⁴⁷⁷⁸ is an apocalyptic number.

974778 is an abundant number, since it is smaller than the sum of its proper divisors (1253382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

974778 is a wasteful number, since it uses less digits than its factorization.

974778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23221.

The product of its digits is 98784, while the sum is 42.

The square root of 974778 is about 987.3084624371. The cubic root of 974778 is about 99.1520976015.

The spelling of 974778 in words is "nine hundred seventy-four thousand, seven hundred seventy-eight".