65487858 has 32 divisors (see below), whose sum is σ = 136382400. Its totient is φ = 20938176.

The previous prime is 65487857. The next prime is 65487869. The reversal of 65487858 is 85878456.

It is a self number, because there is not a number n which added to its sum of digits gives 65487858.

It is not an unprimeable number, because it can be changed into a prime (65487857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27208 + ... + 29516.

It is an arithmetic number, because the mean of its divisors is an integer number (4261950).

Almost surely, 2^65487858 is an apocalyptic number.

65487858 is an abundant number, since it is smaller than the sum of its proper divisors (70894542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65487858 is a wasteful number, since it uses less digits than its factorization.

65487858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506.

The product of its digits is 2150400, while the sum is 51.

The square root of 65487858 is about 8092.4568580870. The cubic root of 65487858 is about 403.0759892583.

The spelling of 65487858 in words is "sixty-five million, four hundred eighty-seven thousand, eight hundred fifty-eight".