65420287 has 8 divisors (see below), whose sum is σ = 70329600. Its totient is φ = 60657624.

The previous prime is 65420281. The next prime is 65420293. The reversal of 65420287 is 78202456.

It is an interprime number because it is at equal distance from previous prime (65420281) and next prime (65420293).

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 65420287 - 2³ = 65420279 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 (65420281) 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, 35737 + ... + 37522.

It is an arithmetic number, because the mean of its divisors is an integer number (8791200).

Almost surely, 2^65420287 is an apocalyptic number.

65420287 is a deficient number, since it is larger than the sum of its proper divisors (4909313).

65420287 is a wasteful number, since it uses less digits than its factorization.

65420287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73325.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 65420287 is about 8088.2808432942. The cubic root of 65420287 is about 402.9373089929.

The spelling of 65420287 in words is "sixty-five million, four hundred twenty thousand, two hundred eighty-seven".