7279681 has 8 divisors (see below), whose sum is σ = 7418880. Its totient is φ = 7141872.

The previous prime is 7279669. The next prime is 7279687. The reversal of 7279681 is 1869727.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7279681 is a prime.

It is a super-3 number, since 3×7279681³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7279687) 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, 18816 + ... + 19198.

It is an arithmetic number, because the mean of its divisors is an integer number (927360).

Almost surely, 2^7279681 is an apocalyptic number.

It is an amenable number.

7279681 is a deficient number, since it is larger than the sum of its proper divisors (139199).

7279681 is a wasteful number, since it uses less digits than its factorization.

7279681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its digits is 42336, while the sum is 40.

The square root of 7279681 is about 2698.0883973658. The cubic root of 7279681 is about 193.8075907883.

The spelling of 7279681 in words is "seven million, two hundred seventy-nine thousand, six hundred eighty-one".