65440722 has 8 divisors (see below), whose sum is σ = 130881456. Its totient is φ = 21813572.

The previous prime is 65440717. The next prime is 65440757. The reversal of 65440722 is 22704456.

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

65440722 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 65440722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5453388 + ... + 5453399.

It is an arithmetic number, because the mean of its divisors is an integer number (16360182).

Almost surely, 2^65440722 is an apocalyptic number.

65440722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65440722 is a wasteful number, since it uses less digits than its factorization.

65440722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906792.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 65440722 is about 8089.5439920925. The cubic root of 65440722 is about 402.9792591131.

The spelling of 65440722 in words is "sixty-five million, four hundred forty thousand, seven hundred twenty-two".