978361 has 4 divisors (see below), whose sum is σ = 980352. Its totient is φ = 976372.

The previous prime is 978359. The next prime is 978389. The reversal of 978361 is 163879.

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: 163879 = 29 ⋅5651.

It is a cyclic number.

It is not a de Polignac number, because 978361 - 2¹ = 978359 is a prime.

It is a Duffinian number.

978361 is a lucky number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979361) 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, 336 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (245088).

2⁹⁷⁸³⁶¹ is an apocalyptic number.

It is an amenable number.

978361 is a deficient number, since it is larger than the sum of its proper divisors (1991).

978361 is a wasteful number, since it uses less digits than its factorization.

978361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990.

The product of its digits is 9072, while the sum is 34.

The square root of 978361 is about 989.1213272395. The cubic root of 978361 is about 99.2734338007.

The spelling of 978361 in words is "nine hundred seventy-eight thousand, three hundred sixty-one".