65406516 has 48 divisors (see below), whose sum is σ = 178139136. Its totient is φ = 18288864.

The previous prime is 65406511. The next prime is 65406529. The reversal of 65406516 is 61560456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65406511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4336 + ... + 12231.

It is an arithmetic number, because the mean of its divisors is an integer number (3711232).

Almost surely, 2^65406516 is an apocalyptic number.

It is an amenable number.

65406516 is an abundant number, since it is smaller than the sum of its proper divisors (112732620).

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

65406516 is a wasteful number, since it uses less digits than its factorization.

65406516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16628 (or 16626 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 65406516 is about 8087.4295051023. The cubic root of 65406516 is about 402.9090341803.

The spelling of 65406516 in words is "sixty-five million, four hundred six thousand, five hundred sixteen".