65561346 has 32 divisors (see below), whose sum is σ = 146448000. Its totient is φ = 21740400.

The previous prime is 65561317. The next prime is 65561347. The reversal of 65561346 is 64316556.

65561346 is a `hidden beast` number, since 65 + 561 + 34 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 65561346.

It is not an unprimeable number, because it can be changed into a prime (65561347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7696 + ... + 13796.

It is an arithmetic number, because the mean of its divisors is an integer number (4576500).

Almost surely, 2^65561346 is an apocalyptic number.

65561346 is an abundant number, since it is smaller than the sum of its proper divisors (80886654).

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

65561346 is a wasteful number, since it uses less digits than its factorization.

65561346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311 (or 6305 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 65561346 is about 8096.9961096693. The cubic root of 65561346 is about 403.2267051119.

It can be divided in two parts, 655 and 61346, that added together give a square (62001 = 249²).

The spelling of 65561346 in words is "sixty-five million, five hundred sixty-one thousand, three hundred forty-six".