65939420 has 24 divisors (see below), whose sum is σ = 141087744. Its totient is φ = 25877696.

The previous prime is 65939327. The next prime is 65939429. The reversal of 65939420 is 2493956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65939429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30044 + ... + 32163.

It is an arithmetic number, because the mean of its divisors is an integer number (5878656).

Almost surely, 2^65939420 is an apocalyptic number.

It is an amenable number.

65939420 is an abundant number, since it is smaller than the sum of its proper divisors (75148324).

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

65939420 is a wasteful number, since it uses less digits than its factorization.

65939420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62269 (or 62267 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 65939420 is about 8120.3091074170. The cubic root of 65939420 is about 404.0003185960. Note that the first 3 decimals are identical.

The spelling of 65939420 in words is "sixty-five million, nine hundred thirty-nine thousand, four hundred twenty".