1013997 has 4 divisors (see below), whose sum is σ = 1352000. Its totient is φ = 675996.

The previous prime is 1013993. The next prime is 1014007. The reversal of 1013997 is 7993101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7993101 = 3 ⋅2664367.

It is not a de Polignac number, because 1013997 - 2² = 1013993 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168997 + ... + 169002.

It is an arithmetic number, because the mean of its divisors is an integer number (338000).

2^1013997 is an apocalyptic number.

It is an amenable number.

1013997 is a deficient number, since it is larger than the sum of its proper divisors (338003).

1013997 is an equidigital number, since it uses as much as digits as its factorization.

1013997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338002.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 1013997 is about 1006.9741804038. The cubic root of 1013997 is about 100.4644065932.

The spelling of 1013997 in words is "one million, thirteen thousand, nine hundred ninety-seven".