870478 has 16 divisors (see below), whose sum is σ = 1509984. Its totient is φ = 368640.

The previous prime is 870461. The next prime is 870479. The reversal of 870478 is 874078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870479) by changing a digit.

870478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1038 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (94374).

2⁸⁷⁰⁴⁷⁸ is an apocalyptic number.

870478 is a deficient number, since it is larger than the sum of its proper divisors (639506).

870478 is a wasteful number, since it uses less digits than its factorization.

870478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 870478 is about 932.9941050189. The cubic root of 870478 is about 95.4815073428.

Subtracting 870478 from its reverse (874078), we obtain a square (3600 = 60²).

The spelling of 870478 in words is "eight hundred seventy thousand, four hundred seventy-eight".