70578 has 16 divisors (see below), whose sum is σ = 156960. Its totient is φ = 23508.

The previous prime is 70573. The next prime is 70583. The reversal of 70578 is 87507.

It is an interprime number because it is at equal distance from previous prime (70573) and next prime (70583).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600 + ... + 707.

It is an arithmetic number, because the mean of its divisors is an integer number (9810).

2⁷⁰⁵⁷⁸ is an apocalyptic number.

70578 is an abundant number, since it is smaller than the sum of its proper divisors (86382).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78480).

70578 is a wasteful number, since it uses less digits than its factorization.

70578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 70578 is about 265.6652028400. The cubic root of 70578 is about 41.3259756819.

The spelling of 70578 in words is "seventy thousand, five hundred seventy-eight".