70557 has 8 divisors (see below), whose sum is σ = 97440. Its totient is φ = 45360.

The previous prime is 70549. The next prime is 70571. The reversal of 70557 is 75507.

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

It is not a de Polignac number, because 70557 - 2³ = 70549 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70507) 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, 319 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (12180).

2⁷⁰⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

70557 is a deficient number, since it is larger than the sum of its proper divisors (26883).

70557 is a wasteful number, since it uses less digits than its factorization.

70557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843.

The product of its (nonzero) digits is 1225, while the sum is 24.

The square root of 70557 is about 265.6256764697. The cubic root of 70557 is about 41.3218765218.

Subtracting 70557 from its reverse (75507), we obtain a triangular number (4950 = T₉₉).

The spelling of 70557 in words is "seventy thousand, five hundred fifty-seven".