65240361 has 24 divisors (see below), whose sum is σ = 97740864. Its totient is φ = 41899680.

The previous prime is 65240347. The next prime is 65240363. The reversal of 65240361 is 16304256.

65240361 is a `hidden beast` number, since 65 + 240 + 361 = 666.

It is not a de Polignac number, because 65240361 - 2¹³ = 65232169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65240363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34716 + ... + 36546.

It is an arithmetic number, because the mean of its divisors is an integer number (4072536).

Almost surely, 2^65240361 is an apocalyptic number.

It is an amenable number.

65240361 is a deficient number, since it is larger than the sum of its proper divisors (32500503).

65240361 is a wasteful number, since it uses less digits than its factorization.

65240361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1978 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 65240361 is about 8077.1505495441. The cubic root of 65240361 is about 402.5675691252.

The spelling of 65240361 in words is "sixty-five million, two hundred forty thousand, three hundred sixty-one".