70791 has 8 divisors (see below), whose sum is σ = 107904. Its totient is φ = 40440.

The previous prime is 70783. The next prime is 70793. The reversal of 70791 is 19707.

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

It is not a de Polignac number, because 70791 - 2³ = 70783 is a prime.

It is a super-2 number, since 2×70791² = 10022731362, which contains 22 as substring.

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.

70791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70793) 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, 1665 + ... + 1706.

It is an arithmetic number, because the mean of its divisors is an integer number (13488).

2⁷⁰⁷⁹¹ is an apocalyptic number.

70791 is a deficient number, since it is larger than the sum of its proper divisors (37113).

70791 is a wasteful number, since it uses less digits than its factorization.

70791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381.

The product of its (nonzero) digits is 441, while the sum is 24.

The square root of 70791 is about 266.0657813399. The cubic root of 70791 is about 41.3675070022.

It can be divided in two parts, 70 and 791, that added together give a triangular number (861 = T₄₁).

The spelling of 70791 in words is "seventy thousand, seven hundred ninety-one".