65664435 has 8 divisors (see below), whose sum is σ = 105063120. Its totient is φ = 35021024.

The previous prime is 65664427. The next prime is 65664481. The reversal of 65664435 is 53446656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65664435 - 2³ = 65664427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65664393 and 65664402.

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, 2188800 + ... + 2188829.

It is an arithmetic number, because the mean of its divisors is an integer number (13132890).

Almost surely, 2^65664435 is an apocalyptic number.

65664435 is a deficient number, since it is larger than the sum of its proper divisors (39398685).

65664435 is a wasteful number, since it uses less digits than its factorization.

65664435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377637.

The product of its digits is 259200, while the sum is 39.

The square root of 65664435 is about 8103.3594885085. The cubic root of 65664435 is about 403.4379396882.

The spelling of 65664435 in words is "sixty-five million, six hundred sixty-four thousand, four hundred thirty-five".