7745641 has 4 divisors (see below), whose sum is σ = 8082432. Its totient is φ = 7408852.

The previous prime is 7745593. The next prime is 7745651. The reversal of 7745641 is 1465477.

It is a happy number.

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 not a de Polignac number, because 7745641 - 2¹⁹ = 7221353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7745597 and 7745606.

It is not an unprimeable number, because it can be changed into a prime (7745651) 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, 168361 + ... + 168406.

It is an arithmetic number, because the mean of its divisors is an integer number (2020608).

Almost surely, 2^7745641 is an apocalyptic number.

It is an amenable number.

7745641 is a deficient number, since it is larger than the sum of its proper divisors (336791).

7745641 is a wasteful number, since it uses less digits than its factorization.

7745641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336790.

The product of its digits is 23520, while the sum is 34.

The square root of 7745641 is about 2783.0991717867. The cubic root of 7745641 is about 197.8574714838.

The spelling of 7745641 in words is "seven million, seven hundred forty-five thousand, six hundred forty-one".