7390681 has 4 divisors (see below), whose sum is σ = 7402752. Its totient is φ = 7378612.

The previous prime is 7390673. The next prime is 7390693. The reversal of 7390681 is 1860937.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7390681 - 2³ = 7390673 is a prime.

It is a super-2 number, since 2×7390681² = 109244331287522, which contains 22 as substring.

It is a Duffinian number.

7390681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7390651) 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, 5065 + ... + 6358.

It is an arithmetic number, because the mean of its divisors is an integer number (1850688).

Almost surely, 2^7390681 is an apocalyptic number.

It is an amenable number.

7390681 is a deficient number, since it is larger than the sum of its proper divisors (12071).

7390681 is a wasteful number, since it uses less digits than its factorization.

7390681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12070.

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

The square root of 7390681 is about 2718.5806958779. The cubic root of 7390681 is about 194.7876803681.

The spelling of 7390681 in words is "seven million, three hundred ninety thousand, six hundred eighty-one".