997734 has 8 divisors (see below), whose sum is σ = 1995480. Its totient is φ = 332576.

The previous prime is 997727. The next prime is 997739. The reversal of 997734 is 437799.

It is a sphenic number, since it is the product of 3 distinct primes.

997734 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 997692 and 997701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997739) by changing a digit.

997734 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 3 ways as a sum of consecutive naturals, for example, 83139 + ... + 83150.

It is an arithmetic number, because the mean of its divisors is an integer number (249435).

2⁹⁹⁷⁷³⁴ is an apocalyptic number.

997734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

997734 is a wasteful number, since it uses less digits than its factorization.

997734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166294.

The product of its digits is 47628, while the sum is 39.

The square root of 997734 is about 998.8663574273. The cubic root of 997734 is about 99.9244095419.

It can be divided in two parts, 9977 and 34, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 997734 in words is "nine hundred ninety-seven thousand, seven hundred thirty-four".