978734 has 4 divisors (see below), whose sum is σ = 1468104. Its totient is φ = 489366.

The previous prime is 978727. The next prime is 978743. The reversal of 978734 is 437879.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978734.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244682 + ... + 244685.

It is an arithmetic number, because the mean of its divisors is an integer number (367026).

2⁹⁷⁸⁷³⁴ is an apocalyptic number.

978734 is a deficient number, since it is larger than the sum of its proper divisors (489370).

978734 is a wasteful number, since it uses less digits than its factorization.

978734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489369.

The product of its digits is 42336, while the sum is 38.

The square root of 978734 is about 989.3098604583. The cubic root of 978734 is about 99.2860481922.

The spelling of 978734 in words is "nine hundred seventy-eight thousand, seven hundred thirty-four".