7649381 has 8 divisors (see below), whose sum is σ = 8081280. Its totient is φ = 7220448.

The previous prime is 7649377. The next prime is 7649393. The reversal of 7649381 is 1839467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7649381 - 2² = 7649377 is a prime.

It is a super-2 number, since 2×7649381² = 117026059366322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7649311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6425 + ... + 7521.

It is an arithmetic number, because the mean of its divisors is an integer number (1010160).

Almost surely, 2^7649381 is an apocalyptic number.

It is an amenable number.

7649381 is a deficient number, since it is larger than the sum of its proper divisors (431899).

7649381 is a wasteful number, since it uses less digits than its factorization.

7649381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483.

The product of its digits is 36288, while the sum is 38.

The square root of 7649381 is about 2765.7514349630. The cubic root of 7649381 is about 197.0344189906.

The spelling of 7649381 in words is "seven million, six hundred forty-nine thousand, three hundred eighty-one".