70780 has 12 divisors (see below), whose sum is σ = 148680. Its totient is φ = 28304.

The previous prime is 70769. The next prime is 70783. The reversal of 70780 is 8707.

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 (70783) by changing a digit.

70780 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750 + ... + 1789.

It is an arithmetic number, because the mean of its divisors is an integer number (12390).

2⁷⁰⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

70780 is an abundant number, since it is smaller than the sum of its proper divisors (77900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74340).

70780 is a wasteful number, since it uses less digits than its factorization.

70780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548 (or 3546 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 70780 is about 266.0451089571. The cubic root of 70780 is about 41.3653642338.

It can be divided in two parts, 707 and 80, that added together give a palindrome (787).

The spelling of 70780 in words is "seventy thousand, seven hundred eighty".