64455117 has 4 divisors (see below), whose sum is σ = 85940160. Its totient is φ = 42970076.

The previous prime is 64455113. The next prime is 64455119. The reversal of 64455117 is 71155446.

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 64455117 - 2² = 64455113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64455113) 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, 10742517 + ... + 10742522.

It is an arithmetic number, because the mean of its divisors is an integer number (21485040).

Almost surely, 2^64455117 is an apocalyptic number.

It is an amenable number.

64455117 is a deficient number, since it is larger than the sum of its proper divisors (21485043).

64455117 is a wasteful number, since it uses less digits than its factorization.

64455117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21485042.

The product of its digits is 16800, while the sum is 33.

The square root of 64455117 is about 8028.3944222989. The cubic root of 64455117 is about 400.9459217336.

The spelling of 64455117 in words is "sixty-four million, four hundred fifty-five thousand, one hundred seventeen".