65467220 has 72 divisors (see below), whose sum is σ = 170198784. Its totient is φ = 20711808.

The previous prime is 65467211. The next prime is 65467229. The reversal of 65467220 is 2276456.

It is an interprime number because it is at equal distance from previous prime (65467211) and next prime (65467229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65467229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22277 + ... + 25043.

It is an arithmetic number, because the mean of its divisors is an integer number (2363872).

Almost surely, 2^65467220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65467220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85099392).

65467220 is an abundant number, since it is smaller than the sum of its proper divisors (104731564).

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

65467220 is a wasteful number, since it uses less digits than its factorization.

65467220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809 (or 2794 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 65467220 is about 8091.1816195164. The cubic root of 65467220 is about 403.0336426996.

The spelling of 65467220 in words is "sixty-five million, four hundred sixty-seven thousand, two hundred twenty".