65147247 has 90 divisors (see below), whose sum is σ = 118573224. Its totient is φ = 35544960.

The previous prime is 65147239. The next prime is 65147261. The reversal of 65147247 is 74274156.

It is not a de Polignac number, because 65147247 - 2³ = 65147239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65147287) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 2832478 + ... + 2832500.

Almost surely, 2^65147247 is an apocalyptic number.

65147247 is a deficient number, since it is larger than the sum of its proper divisors (53425977).

65147247 is a wasteful number, since it uses less digits than its factorization.

65147247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 54 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 65147247 is about 8071.3844537353. The cubic root of 65147247 is about 402.3759570439.

The spelling of 65147247 in words is "sixty-five million, one hundred forty-seven thousand, two hundred forty-seven".