65505747 has 8 divisors (see below), whose sum is σ = 88537744. Its totient is φ = 43072128.

The previous prime is 65505731. The next prime is 65505757. The reversal of 65505747 is 74750556.

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

It is not a de Polignac number, because 65505747 - 2⁴ = 65505731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65505707) 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, 149338 + ... + 149775.

It is an arithmetic number, because the mean of its divisors is an integer number (11067218).

Almost surely, 2^65505747 is an apocalyptic number.

65505747 is a deficient number, since it is larger than the sum of its proper divisors (23031997).

65505747 is a wasteful number, since it uses less digits than its factorization.

65505747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299189.

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 65505747 is about 8093.5620711773. The cubic root of 65505747 is about 403.1126880201.

The spelling of 65505747 in words is "sixty-five million, five hundred five thousand, seven hundred forty-seven".