65440626 has 8 divisors (see below), whose sum is σ = 130881264. Its totient is φ = 21813540.

The previous prime is 65440621. The next prime is 65440691. The reversal of 65440626 is 62604456.

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

65440626 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (65440621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5453380 + ... + 5453391.

It is an arithmetic number, because the mean of its divisors is an integer number (16360158).

Almost surely, 2^65440626 is an apocalyptic number.

65440626 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.

65440626 is a wasteful number, since it uses less digits than its factorization.

65440626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906776.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 65440626 is about 8089.5380585049. The cubic root of 65440626 is about 402.9790620593.

It can be divided in two parts, 65440 and 626, that added together give a palindrome (66066).

The spelling of 65440626 in words is "sixty-five million, four hundred forty thousand, six hundred twenty-six".