659478 has 8 divisors (see below), whose sum is σ = 1318968. Its totient is φ = 219824.

The previous prime is 659473. The next prime is 659497. The reversal of 659478 is 874956.

It is a sphenic number, since it is the product of 3 distinct primes.

659478 is an admirable number.

It is a super-2 number, since 2×659478² = 869822464968, which contains 22 as substring.

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 659478.

It is not an unprimeable number, because it can be changed into a prime (659473) 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, 54951 + ... + 54962.

It is an arithmetic number, because the mean of its divisors is an integer number (164871).

2⁶⁵⁹⁴⁷⁸ is an apocalyptic number.

659478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

659478 is a wasteful number, since it uses less digits than its factorization.

659478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109918.

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

The square root of 659478 is about 812.0825081234. The cubic root of 659478 is about 87.0429171265.

The spelling of 659478 in words is "six hundred fifty-nine thousand, four hundred seventy-eight".