978097 has 4 divisors (see below), whose sum is σ = 982080. Its totient is φ = 974116.

The previous prime is 978091. The next prime is 978113. The reversal of 978097 is 790879.

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 a de Polignac number, because none of the positive numbers 2^k-978097 is a prime.

It is a Duffinian number.

978097 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (978091) 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, 1597 + ... + 2122.

It is an arithmetic number, because the mean of its divisors is an integer number (245520).

2⁹⁷⁸⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

978097 is a deficient number, since it is larger than the sum of its proper divisors (3983).

978097 is a wasteful number, since it uses less digits than its factorization.

978097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 978097 is about 988.9878664574. The cubic root of 978097 is about 99.2645037145.

The spelling of 978097 in words is "nine hundred seventy-eight thousand, ninety-seven".