660478 has 32 divisors (see below), whose sum is σ = 1290240. Its totient is φ = 246240.

The previous prime is 660449. The next prime is 660493. The reversal of 660478 is 874066.

660478 = T₉₂ + T₉₃ + ... + T₁₆₇.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3363 + ... + 3553.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2⁶⁶⁰⁴⁷⁸ is an apocalyptic number.

660478 is a deficient number, since it is larger than the sum of its proper divisors (629762).

660478 is a wasteful number, since it uses less digits than its factorization.

660478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 660478 is about 812.6979758803. The cubic root of 660478 is about 87.0868907734.

The spelling of 660478 in words is "six hundred sixty thousand, four hundred seventy-eight".