7573681 has 4 divisors (see below), whose sum is σ = 7580272. Its totient is φ = 7567092.

The previous prime is 7573679. The next prime is 7573691. The reversal of 7573681 is 1863757.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7573681 - 2¹ = 7573679 is a prime.

It is a super-2 number, since 2×7573681² = 114721287779522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7573681.

It is not an unprimeable number, because it can be changed into a prime (7573691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071 + ... + 4036.

It is an arithmetic number, because the mean of its divisors is an integer number (1895068).

Almost surely, 2^7573681 is an apocalyptic number.

It is an amenable number.

7573681 is a deficient number, since it is larger than the sum of its proper divisors (6591).

7573681 is a wasteful number, since it uses less digits than its factorization.

7573681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6590.

The product of its digits is 35280, while the sum is 37.

The square root of 7573681 is about 2752.0321582423. The cubic root of 7573681 is about 196.3822973689.

The spelling of 7573681 in words is "seven million, five hundred seventy-three thousand, six hundred eighty-one".