64316905 has 8 divisors (see below), whose sum is σ = 79062984. Its totient is φ = 50198400.

The previous prime is 64316897. The next prime is 64316911. The reversal of 64316905 is 50961346.

It can be written as a sum of positive squares in 4 ways, for example, as 2725801 + 61591104 = 1651^2 + 7848^2 .

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

It is not a de Polignac number, because 64316905 - 2³ = 64316897 is a prime.

It is a Duffinian 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, 156666 + ... + 157075.

It is an arithmetic number, because the mean of its divisors is an integer number (9882873).

Almost surely, 2^64316905 is an apocalyptic number.

It is an amenable number.

64316905 is a deficient number, since it is larger than the sum of its proper divisors (14746079).

64316905 is a wasteful number, since it uses less digits than its factorization.

64316905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313787.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 64316905 is about 8019.7821042719. The cubic root of 64316905 is about 400.6591320159.

It can be divided in two parts, 64 and 316905, that added together give a square (316969 = 563²).

The spelling of 64316905 in words is "sixty-four million, three hundred sixteen thousand, nine hundred five".