7690381 has 4 divisors (see below), whose sum is σ = 7702812. Its totient is φ = 7677952.

The previous prime is 7690379. The next prime is 7690391. The reversal of 7690381 is 1830967.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3553225 + 4137156 = 1885^2 + 2034^2 .

It is a cyclic number.

It is not a de Polignac number, because 7690381 - 2¹ = 7690379 is a prime.

It is a super-2 number, since 2×7690381² = 118283919850322, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7690301) 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, 5236 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (1925703).

Almost surely, 2^7690381 is an apocalyptic number.

It is an amenable number.

7690381 is a deficient number, since it is larger than the sum of its proper divisors (12431).

7690381 is a wasteful number, since it uses less digits than its factorization.

7690381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12430.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 7690381 is about 2773.1536199785. The cubic root of 7690381 is about 197.3858208803.

The spelling of 7690381 in words is "seven million, six hundred ninety thousand, three hundred eighty-one".