997017401 has 4 divisors (see below), whose sum is σ = 1000696704. Its totient is φ = 993338100.

The previous prime is 997017383. The next prime is 997017421. The reversal of 997017401 is 104710799.

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.

It is a cyclic number.

It is not a de Polignac number, because 997017401 - 2⁶ = 997017337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (997017421) 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, 1839245 + ... + 1839786.

It is an arithmetic number, because the mean of its divisors is an integer number (250174176).

Almost surely, 2^997017401 is an apocalyptic number.

It is an amenable number.

997017401 is a deficient number, since it is larger than the sum of its proper divisors (3679303).

997017401 is a wasteful number, since it uses less digits than its factorization.

997017401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679302.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 997017401 is about 31575.5823540913. The cubic root of 997017401 is about 999.0048102593.

The spelling of 997017401 in words is "nine hundred ninety-seven million, seventeen thousand, four hundred one".