64455645 has 8 divisors (see below), whose sum is σ = 103129056. Its totient is φ = 34376336.

The previous prime is 64455617. The next prime is 64455673. The reversal of 64455645 is 54655446.

It is an interprime number because it is at equal distance from previous prime (64455617) and next prime (64455673).

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 64455645 - 2⁹ = 64455133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2148507 + ... + 2148536.

It is an arithmetic number, because the mean of its divisors is an integer number (12891132).

Almost surely, 2^64455645 is an apocalyptic number.

It is an amenable number.

64455645 is a deficient number, since it is larger than the sum of its proper divisors (38673411).

64455645 is a wasteful number, since it uses less digits than its factorization.

64455645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4297051.

The product of its digits is 288000, while the sum is 39.

The square root of 64455645 is about 8028.4273055188. The cubic root of 64455645 is about 400.9470165464.

It can be divided in two parts, 6445 and 5645, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 64455645 in words is "sixty-four million, four hundred fifty-five thousand, six hundred forty-five".