65428871 has 8 divisors (see below), whose sum is σ = 67157424. Its totient is φ = 63718720.

The previous prime is 65428861. The next prime is 65428889. The reversal of 65428871 is 17882456.

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

It is not a de Polignac number, because 65428871 - 2⁶ = 65428807 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 (65428861) 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, 2756 + ... + 11766.

It is an arithmetic number, because the mean of its divisors is an integer number (8394678).

Almost surely, 2^65428871 is an apocalyptic number.

65428871 is a deficient number, since it is larger than the sum of its proper divisors (1728553).

65428871 is a wasteful number, since it uses less digits than its factorization.

65428871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201.

The product of its digits is 107520, while the sum is 41.

The square root of 65428871 is about 8088.8114701729. The cubic root of 65428871 is about 402.9549317760.

The spelling of 65428871 in words is "sixty-five million, four hundred twenty-eight thousand, eight hundred seventy-one".