65213447 has 8 divisors (see below), whose sum is σ = 70376544. Its totient is φ = 60071328.

The previous prime is 65213437. The next prime is 65213497. The reversal of 65213447 is 74431256.

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 65213447 - 2⁶ = 65213383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65213437) 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, 1553 + ... + 11525.

It is an arithmetic number, because the mean of its divisors is an integer number (8797068).

Almost surely, 2^65213447 is an apocalyptic number.

65213447 is a deficient number, since it is larger than the sum of its proper divisors (5163097).

65213447 is a wasteful number, since it uses less digits than its factorization.

65213447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10489.

The product of its digits is 20160, while the sum is 32.

The square root of 65213447 is about 8075.4843198411. The cubic root of 65213447 is about 402.5122036345.

The spelling of 65213447 in words is "sixty-five million, two hundred thirteen thousand, four hundred forty-seven".