997377 has 8 divisors (see below), whose sum is σ = 1335360. Its totient is φ = 662160.

The previous prime is 997369. The next prime is 997379. The reversal of 997377 is 773799.

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

It is not a de Polignac number, because 997377 - 2³ = 997369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997379) 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, 399 + ... + 1467.

It is an arithmetic number, because the mean of its divisors is an integer number (166920).

It is a Proth number, since it is equal to 487 ⋅ 2¹¹ + 1 and 487 < 2¹¹.

2⁹⁹⁷³⁷⁷ is an apocalyptic number.

It is an amenable number.

997377 is a deficient number, since it is larger than the sum of its proper divisors (337983).

997377 is a wasteful number, since it uses less digits than its factorization.

997377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383.

The product of its digits is 83349, while the sum is 42.

The square root of 997377 is about 998.6876388541. The cubic root of 997377 is about 99.9124901092.

The spelling of 997377 in words is "nine hundred ninety-seven thousand, three hundred seventy-seven".