64505918 has 8 divisors (see below), whose sum is σ = 100095480. Its totient is φ = 31140760.

The previous prime is 64505899. The next prime is 64505923. The reversal of 64505918 is 81950546.

64505918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64505918² = 8322026914045448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556028 + ... + 556143.

It is an arithmetic number, because the mean of its divisors is an integer number (12511935).

Almost surely, 2^64505918 is an apocalyptic number.

64505918 is a deficient number, since it is larger than the sum of its proper divisors (35589562).

64505918 is a wasteful number, since it uses less digits than its factorization.

64505918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112202.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 64505918 is about 8031.5576322405. The cubic root of 64505918 is about 401.0512306982.

The spelling of 64505918 in words is "sixty-four million, five hundred five thousand, nine hundred eighteen".