65129071 has 8 divisors (see below), whose sum is σ = 74704160. Its totient is φ = 55621728.

The previous prime is 65129059. The next prime is 65129087. The reversal of 65129071 is 17092156.

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

It is a cyclic number.

It is not a de Polignac number, because 65129071 - 2⁵ = 65129039 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 (65129371) 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, 14856 + ... + 18733.

It is an arithmetic number, because the mean of its divisors is an integer number (9338020).

Almost surely, 2^65129071 is an apocalyptic number.

65129071 is a deficient number, since it is larger than the sum of its proper divisors (9575089).

65129071 is a wasteful number, since it uses less digits than its factorization.

65129071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33873.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 65129071 is about 8070.2584221325. The cubic root of 65129071 is about 402.3385327679.

The spelling of 65129071 in words is "sixty-five million, one hundred twenty-nine thousand, seventy-one".