65140567 has 4 divisors (see below), whose sum is σ = 65169936. Its totient is φ = 65111200.

The previous prime is 65140561. The next prime is 65140573. The reversal of 65140567 is 76504156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (65140561) and next prime (65140573).

It is a cyclic number.

It is not a de Polignac number, because 65140567 - 2¹¹ = 65138519 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 (65140561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11059 + ... + 15892.

It is an arithmetic number, because the mean of its divisors is an integer number (16292484).

Almost surely, 2^65140567 is an apocalyptic number.

65140567 is a deficient number, since it is larger than the sum of its proper divisors (29369).

65140567 is a wasteful number, since it uses less digits than its factorization.

65140567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29368.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 65140567 is about 8070.9706355556. The cubic root of 65140567 is about 402.3622037727.

The spelling of 65140567 in words is "sixty-five million, one hundred forty thousand, five hundred sixty-seven".