65546420 has 12 divisors (see below), whose sum is σ = 137647524. Its totient is φ = 26218560.

The previous prime is 65546357. The next prime is 65546443. The reversal of 65546420 is 2464556.

It can be written as a sum of positive squares in 2 ways, for example, as 27081616 + 38464804 = 5204^2 + 6202^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1638641 + ... + 1638680.

It is an arithmetic number, because the mean of its divisors is an integer number (11470627).

Almost surely, 2^65546420 is an apocalyptic number.

It is an amenable number.

65546420 is an abundant number, since it is smaller than the sum of its proper divisors (72101104).

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

65546420 is a wasteful number, since it uses less digits than its factorization.

65546420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277330 (or 3277328 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 65546420 is about 8096.0743573660. The cubic root of 65546420 is about 403.1961026357.

The spelling of 65546420 in words is "sixty-five million, five hundred forty-six thousand, four hundred twenty".