65565401 has 8 divisors (see below), whose sum is σ = 72090624. Its totient is φ = 59134320.

The previous prime is 65565391. The next prime is 65565407. The reversal of 65565401 is 10456556.

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 65565401 - 2⁶ = 65565337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65565407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22070 + ... + 24863.

It is an arithmetic number, because the mean of its divisors is an integer number (9011328).

Almost surely, 2^65565401 is an apocalyptic number.

It is an amenable number.

65565401 is a deficient number, since it is larger than the sum of its proper divisors (6525223).

65565401 is a wasteful number, since it uses less digits than its factorization.

65565401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47071.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 65565401 is about 8097.2465073011. The cubic root of 65565401 is about 403.2350181941.

The spelling of 65565401 in words is "sixty-five million, five hundred sixty-five thousand, four hundred one".