65570464 has 12 divisors (see below), whose sum is σ = 129091914. Its totient is φ = 32785216.

The previous prime is 65570443. The next prime is 65570467. The reversal of 65570464 is 46407556.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65480464 + 90000 = 8092^2 + 300^2 .

It is not an unprimeable number, because it can be changed into a prime (65570467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1024507 + ... + 1024570.

Almost surely, 2^65570464 is an apocalyptic number.

It is an amenable number.

65570464 is a deficient number, since it is larger than the sum of its proper divisors (63521450).

65570464 is a wasteful number, since it uses less digits than its factorization.

65570464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049087 (or 2049079 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 65570464 is about 8097.5591384071. The cubic root of 65570464 is about 403.2453972778.

The spelling of 65570464 in words is "sixty-five million, five hundred seventy thousand, four hundred sixty-four".