65148869 has 4 divisors (see below), whose sum is σ = 65170860. Its totient is φ = 65126880.

The previous prime is 65148847. The next prime is 65148893. The reversal of 65148869 is 96884156.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4464769 + 60684100 = 2113^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 65148869 - 2⁸ = 65148613 is a prime.

It is a super-2 number, since 2×65148869² = 8488750263958322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65148899) 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, 5702 + ... + 12759.

It is an arithmetic number, because the mean of its divisors is an integer number (16292715).

Almost surely, 2^65148869 is an apocalyptic number.

It is an amenable number.

65148869 is a deficient number, since it is larger than the sum of its proper divisors (21991).

65148869 is a wasteful number, since it uses less digits than its factorization.

65148869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21990.

The product of its digits is 414720, while the sum is 47.

The square root of 65148869 is about 8071.4849315352. The cubic root of 65148869 is about 402.3792963939.

The spelling of 65148869 in words is "sixty-five million, one hundred forty-eight thousand, eight hundred sixty-nine".