70538 has 8 divisors (see below), whose sum is σ = 113988. Its totient is φ = 32544.

The previous prime is 70537. The next prime is 70549. The reversal of 70538 is 83507.

It can be written as a sum of positive squares in 2 ways, for example, as 69169 + 1369 = 263^2 + 37^2 .

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

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (70537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331 + ... + 1382.

2⁷⁰⁵³⁸ is an apocalyptic number.

70538 is a deficient number, since it is larger than the sum of its proper divisors (43450).

70538 is a wasteful number, since it uses less digits than its factorization.

70538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 70538 is about 265.5899094469. The cubic root of 70538 is about 41.3181670569.

The spelling of 70538 in words is "seventy thousand, five hundred thirty-eight".