7005780 has 36 divisors (see below), whose sum is σ = 21251412. Its totient is φ = 1868160.

The previous prime is 7005767. The next prime is 7005787. The reversal of 7005780 is 875007.

It can be written as a sum of positive squares in 2 ways, for example, as 715716 + 6290064 = 846^2 + 2508^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7005787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19281 + ... + 19640.

It is an arithmetic number, because the mean of its divisors is an integer number (590317).

Almost surely, 2^7005780 is an apocalyptic number.

It is an amenable number.

7005780 is an abundant number, since it is smaller than the sum of its proper divisors (14245632).

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

7005780 is a wasteful number, since it uses less digits than its factorization.

7005780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38936 (or 38931 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 7005780 is about 2646.8434029991. The cubic root of 7005780 is about 191.3457549458.

The spelling of 7005780 in words is "seven million, five thousand, seven hundred eighty".