70779 has 4 divisors (see below), whose sum is σ = 94376. Its totient is φ = 47184.

The previous prime is 70769. The next prime is 70783. The reversal of 70779 is 97707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97707 = 3 ⋅32569.

It is not a de Polignac number, because 70779 - 2¹² = 66683 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (70709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11794 + ... + 11799.

It is an arithmetic number, because the mean of its divisors is an integer number (23594).

2⁷⁰⁷⁷⁹ is an apocalyptic number.

70779 is a deficient number, since it is larger than the sum of its proper divisors (23597).

70779 is a wasteful number, since it uses less digits than its factorization.

70779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23596.

The product of its (nonzero) digits is 3087, while the sum is 30.

The square root of 70779 is about 266.0432295699. The cubic root of 70779 is about 41.3651694257.

The spelling of 70779 in words is "seventy thousand, seven hundred seventy-nine".