65146887 has 12 divisors (see below), whose sum is σ = 101339784. Its totient is φ = 40090320.

The previous prime is 65146813. The next prime is 65146889. The reversal of 65146887 is 78864156.

It is a happy number.

It is not a de Polignac number, because 65146887 - 2¹⁹ = 64622599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65146889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278289 + ... + 278522.

It is an arithmetic number, because the mean of its divisors is an integer number (8444982).

Almost surely, 2^65146887 is an apocalyptic number.

65146887 is a deficient number, since it is larger than the sum of its proper divisors (36192897).

65146887 is a wasteful number, since it uses less digits than its factorization.

65146887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556830 (or 556827 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 65146887 is about 8071.3621526976. The cubic root of 65146887 is about 402.3752158736.

The spelling of 65146887 in words is "sixty-five million, one hundred forty-six thousand, eight hundred eighty-seven".