6455645 has 8 divisors (see below), whose sum is σ = 8853504. Its totient is φ = 4426704.

The previous prime is 6455639. The next prime is 6455677. The reversal of 6455645 is 5465546.

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 6455645 - 2¹⁰ = 6454621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 184447 = 6455645 / (6 + 4 + 5 + 5 + 6 + 4 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92189 + ... + 92258.

It is an arithmetic number, because the mean of its divisors is an integer number (1106688).

Almost surely, 2^6455645 is an apocalyptic number.

It is an amenable number.

6455645 is a deficient number, since it is larger than the sum of its proper divisors (2397859).

6455645 is a wasteful number, since it uses less digits than its factorization.

6455645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184459.

The product of its digits is 72000, while the sum is 35.

The square root of 6455645 is about 2540.7961350726. The cubic root of 6455645 is about 186.2000872212.

Subtracting from 6455645 its reverse (5465546), we obtain a palindrome (990099).

The spelling of 6455645 in words is "six million, four hundred fifty-five thousand, six hundred forty-five".