978465 has 32 divisors (see below), whose sum is σ = 1685376. Its totient is φ = 483840.

The previous prime is 978463. The next prime is 978473. The reversal of 978465 is 564879.

It is not a de Polignac number, because 978465 - 2¹ = 978463 is a prime.

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 978465.

It is not an unprimeable number, because it can be changed into a prime (978463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22734 + ... + 22776.

It is an arithmetic number, because the mean of its divisors is an integer number (52668).

2⁹⁷⁸⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

978465 is a deficient number, since it is larger than the sum of its proper divisors (706911).

978465 is a wasteful number, since it uses less digits than its factorization.

978465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129.

The product of its digits is 60480, while the sum is 39.

The square root of 978465 is about 989.1738977551. The cubic root of 978465 is about 99.2769512724.

The spelling of 978465 in words is "nine hundred seventy-eight thousand, four hundred sixty-five".