65406012 has 24 divisors (see below), whose sum is σ = 174416256. Its totient is φ = 18687408.

The previous prime is 65406007. The next prime is 65406017. The reversal of 65406012 is 21060456.

It is an interprime number because it is at equal distance from previous prime (65406007) and next prime (65406017).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65406017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389238 + ... + 389405.

It is an arithmetic number, because the mean of its divisors is an integer number (7267344).

Almost surely, 2^65406012 is an apocalyptic number.

It is an amenable number.

65406012 is an abundant number, since it is smaller than the sum of its proper divisors (109010244).

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

65406012 is a wasteful number, since it uses less digits than its factorization.

65406012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778657 (or 778655 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 65406012 is about 8087.3983455744. The cubic root of 65406012 is about 402.9079992850.

Adding to 65406012 its reverse (21060456), we get a palindrome (86466468).

The spelling of 65406012 in words is "sixty-five million, four hundred six thousand, twelve".