65433420 has 180 divisors, whose sum is σ = 223201440. Its totient is φ = 16039296.

The previous prime is 65433383. The next prime is 65433437. The reversal of 65433420 is 2433456.

65433420 is a `hidden beast` number, since 654 + 3 + 3 + 4 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 273661 + ... + 273899.

It is an arithmetic number, because the mean of its divisors is an integer number (1240008).

Almost surely, 2^65433420 is an apocalyptic number.

65433420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65433420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111600720).

65433420 is an abundant number, since it is smaller than the sum of its proper divisors (157768020).

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

65433420 is a wasteful number, since it uses less digits than its factorization.

65433420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 65433420 is about 8089.0926561636. The cubic root of 65433420 is about 402.9642701587.

Adding to 65433420 its reverse (2433456), we get a palindrome (67866876).

The spelling of 65433420 in words is "sixty-five million, four hundred thirty-three thousand, four hundred twenty".