65238487 has 4 divisors (see below), whose sum is σ = 67488120. Its totient is φ = 62988856.

The previous prime is 65238461. The next prime is 65238517. The reversal of 65238487 is 78483256.

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

It is a cyclic number.

It is not a de Polignac number, because 65238487 - 2¹⁵ = 65205719 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 (65248487) 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, 1124773 + ... + 1124830.

It is an arithmetic number, because the mean of its divisors is an integer number (16872030).

Almost surely, 2^65238487 is an apocalyptic number.

65238487 is a deficient number, since it is larger than the sum of its proper divisors (2249633).

65238487 is a wasteful number, since it uses less digits than its factorization.

65238487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249632.

The product of its digits is 322560, while the sum is 43.

The square root of 65238487 is about 8077.0345424543. The cubic root of 65238487 is about 402.5637145642.

The spelling of 65238487 in words is "sixty-five million, two hundred thirty-eight thousand, four hundred eighty-seven".