65405064 has 32 divisors (see below), whose sum is σ = 167317920. Its totient is φ = 21294336.

The previous prime is 65405057. The next prime is 65405117. The reversal of 65405064 is 46050456.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30657 + ... + 32720.

It is an arithmetic number, because the mean of its divisors is an integer number (5228685).

Almost surely, 2^65405064 is an apocalyptic number.

It is an amenable number.

65405064 is an abundant number, since it is smaller than the sum of its proper divisors (101912856).

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

65405064 is a wasteful number, since it uses less digits than its factorization.

65405064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63429 (or 63425 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 65405064 is about 8087.3397356609. The cubic root of 65405064 is about 402.9060526820.

The spelling of 65405064 in words is "sixty-five million, four hundred five thousand, sixty-four".