7672381 has 4 divisors (see below), whose sum is σ = 7681212. Its totient is φ = 7663552.

The previous prime is 7672349. The next prime is 7672391. The reversal of 7672381 is 1832767.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1832767 = 727 ⋅2521.

It can be written as a sum of positive squares in 2 ways, for example, as 3404025 + 4268356 = 1845^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 7672381 - 2⁵ = 7672349 is a prime.

It is a super-2 number, since 2×7672381² = 117730860418322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

7672381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7672391) 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, 2950 + ... + 4903.

It is an arithmetic number, because the mean of its divisors is an integer number (1920303).

Almost surely, 2^7672381 is an apocalyptic number.

It is an amenable number.

7672381 is a deficient number, since it is larger than the sum of its proper divisors (8831).

7672381 is an equidigital number, since it uses as much as digits as its factorization.

7672381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830.

The product of its digits is 14112, while the sum is 34.

The square root of 7672381 is about 2769.9063161053. The cubic root of 7672381 is about 197.2317010616.

The spelling of 7672381 in words is "seven million, six hundred seventy-two thousand, three hundred eighty-one".