65552247 has 20 divisors (see below), whose sum is σ = 99536536. Its totient is φ = 42981840.

The previous prime is 65552239. The next prime is 65552251. The reversal of 65552247 is 74225556.

65552247 is a `hidden beast` number, since 65 + 552 + 2 + 47 = 666.

It is not a de Polignac number, because 65552247 - 2³ = 65552239 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 (65552947) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1693 + ... + 11574.

Almost surely, 2^65552247 is an apocalyptic number.

65552247 is a deficient number, since it is larger than the sum of its proper divisors (33984289).

65552247 is a wasteful number, since it uses less digits than its factorization.

65552247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13340 (or 13331 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 65552247 is about 8096.4342151345. The cubic root of 65552247 is about 403.2080501688.

The spelling of 65552247 in words is "sixty-five million, five hundred fifty-two thousand, two hundred forty-seven".