7000381 has 4 divisors (see below), whose sum is σ = 7171164. Its totient is φ = 6829600.

The previous prime is 7000373. The next prime is 7000391. The reversal of 7000381 is 1830007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1830007 = 269 ⋅6803.

It can be written as a sum of positive squares in 2 ways, for example, as 416025 + 6584356 = 645^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 7000381 - 2³ = 7000373 is a prime.

It is a super-2 number, since 2×7000381² = 98010668290322, which contains 22 as substring.

It is a Duffinian number.

7000381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7000351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85330 + ... + 85411.

It is an arithmetic number, because the mean of its divisors is an integer number (1792791).

Almost surely, 2^7000381 is an apocalyptic number.

It is an amenable number.

7000381 is a deficient number, since it is larger than the sum of its proper divisors (170783).

7000381 is a wasteful number, since it uses less digits than its factorization.

7000381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170782.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 7000381 is about 2645.8233123170. The cubic root of 7000381 is about 191.2965888180.

Adding to 7000381 its reverse (1830007), we get a palindrome (8830388).

It can be divided in two parts, 7000 and 381, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 7000381 in words is "seven million, three hundred eighty-one", and thus it is an aban number.