65005554 has 16 divisors (see below), whose sum is σ = 130239648. Its totient is φ = 21630432.

The previous prime is 65005553. The next prime is 65005579. The reversal of 65005554 is 45550056.

It is not an unprimeable number, because it can be changed into a prime (65005553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5707 + ... + 12750.

It is an arithmetic number, because the mean of its divisors is an integer number (8139978).

Almost surely, 2^65005554 is an apocalyptic number.

65005554 is an abundant number, since it is smaller than the sum of its proper divisors (65234094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65005554 is a wasteful number, since it uses less digits than its factorization.

65005554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19049.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 65005554 is about 8062.6021853990. The cubic root of 65005554 is about 402.0840273845.

The spelling of 65005554 in words is "sixty-five million, five thousand, five hundred fifty-four".