65040464 has 10 divisors (see below), whose sum is σ = 126015930. Its totient is φ = 32520224.

The previous prime is 65040379. The next prime is 65040499. The reversal of 65040464 is 46404056.

It can be written as a sum of positive squares in only one way, i.e., 36096064 + 28944400 = 6008^2 + 5380^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2032499 + ... + 2032530.

It is an arithmetic number, because the mean of its divisors is an integer number (12601593).

Almost surely, 2^65040464 is an apocalyptic number.

It is an amenable number.

65040464 is a deficient number, since it is larger than the sum of its proper divisors (60975466).

65040464 is a wasteful number, since it uses less digits than its factorization.

65040464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065037 (or 4065031 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 65040464 is about 8064.7668286194. The cubic root of 65040464 is about 402.1559917042.

It can be divided in two parts, 650 and 40464, that added together give a palindrome (41114).

The spelling of 65040464 in words is "sixty-five million, forty thousand, four hundred sixty-four".