997437 has 8 divisors (see below), whose sum is σ = 1519936. Its totient is φ = 569952.

The previous prime is 997433. The next prime is 997439. The reversal of 997437 is 734799.

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

It is not a de Polignac number, because 997437 - 2² = 997433 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 997395 and 997404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23728 + ... + 23769.

It is an arithmetic number, because the mean of its divisors is an integer number (189992).

2⁹⁹⁷⁴³⁷ is an apocalyptic number.

It is an amenable number.

997437 is a deficient number, since it is larger than the sum of its proper divisors (522499).

997437 is a wasteful number, since it uses less digits than its factorization.

997437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47507.

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

The square root of 997437 is about 998.7176778249. The cubic root of 997437 is about 99.9144935740.

It can be divided in two parts, 9974 and 37, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 997437 in words is "nine hundred ninety-seven thousand, four hundred thirty-seven".