978069 has 4 divisors (see below), whose sum is σ = 1304096. Its totient is φ = 652044.

The previous prime is 978067. The next prime is 978071. The reversal of 978069 is 960879.

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: 960879 = 3 ⋅320293.

It is an interprime number because it is at equal distance from previous prime (978067) and next prime (978071).

It is not a de Polignac number, because 978069 - 2¹ = 978067 is a prime.

It is a super-2 number, since 2×978069² = 1913237937522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978069.

It is not an unprimeable number, because it can be changed into a prime (978067) 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, 163009 + ... + 163014.

It is an arithmetic number, because the mean of its divisors is an integer number (326024).

2⁹⁷⁸⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

978069 is a deficient number, since it is larger than the sum of its proper divisors (326027).

978069 is a wasteful number, since it uses less digits than its factorization.

978069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326026.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 978069 is about 988.9737104696. The cubic root of 978069 is about 99.2635564899.

The spelling of 978069 in words is "nine hundred seventy-eight thousand, sixty-nine".