64485665 has 8 divisors (see below), whose sum is σ = 77692608. Its totient is φ = 51382000.

The previous prime is 64485653. The next prime is 64485671. The reversal of 64485665 is 56658446.

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

It is not a de Polignac number, because 64485665 - 2⁴ = 64485649 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, 24437 + ... + 26946.

It is an arithmetic number, because the mean of its divisors is an integer number (9711576).

Almost surely, 2^64485665 is an apocalyptic number.

It is an amenable number.

64485665 is a deficient number, since it is larger than the sum of its proper divisors (13206943).

64485665 is a wasteful number, since it uses less digits than its factorization.

64485665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51639.

The product of its digits is 691200, while the sum is 44.

The square root of 64485665 is about 8030.2966943943. The cubic root of 64485665 is about 401.0092534603.

The spelling of 64485665 in words is "sixty-four million, four hundred eighty-five thousand, six hundred sixty-five".