64844065 has 32 divisors (see below), whose sum is σ = 92534400. Its totient is φ = 43000320.

The previous prime is 64844051. The next prime is 64844071. The reversal of 64844065 is 56044846.

It is not a de Polignac number, because 64844065 - 2²³ = 56455457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63126 + ... + 64144.

It is an arithmetic number, because the mean of its divisors is an integer number (2891700).

Almost surely, 2^64844065 is an apocalyptic number.

64844065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64844065 is a deficient number, since it is larger than the sum of its proper divisors (27690335).

64844065 is a wasteful number, since it uses less digits than its factorization.

64844065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137.

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 64844065 is about 8052.5812631727. The cubic root of 64844065 is about 401.7507943671.

The spelling of 64844065 in words is "sixty-four million, eight hundred forty-four thousand, sixty-five".