70819 has 8 divisors (see below), whose sum is σ = 82688. Its totient is φ = 59400.

The previous prime is 70793. The next prime is 70823. The reversal of 70819 is 91807.

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

It is a cyclic number.

It is not a de Polignac number, because 70819 - 2¹¹ = 68771 is a prime.

It is a super-2 number, since 2×70819² = 10030661522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70793 and 70802.

It is not an unprimeable number, because it can be changed into a prime (70849) 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 7 ways as a sum of consecutive naturals, for example, 394 + ... + 544.

It is an arithmetic number, because the mean of its divisors is an integer number (10336).

2⁷⁰⁸¹⁹ is an apocalyptic number.

70819 is a deficient number, since it is larger than the sum of its proper divisors (11869).

70819 is a wasteful number, since it uses less digits than its factorization.

70819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 70819 is about 266.1183947043. The cubic root of 70819 is about 41.3729603203.

It can be divided in two parts, 708 and 19, that added together give a palindrome (727).

The spelling of 70819 in words is "seventy thousand, eight hundred nineteen".