65874787 has 4 divisors (see below), whose sum is σ = 71863416. Its totient is φ = 59886160.

The previous prime is 65874749. The next prime is 65874793. The reversal of 65874787 is 78747856.

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 65874787 - 2²³ = 57486179 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65874727) 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, 2994298 + ... + 2994319.

It is an arithmetic number, because the mean of its divisors is an integer number (17965854).

Almost surely, 2^65874787 is an apocalyptic number.

65874787 is a deficient number, since it is larger than the sum of its proper divisors (5988629).

65874787 is a wasteful number, since it uses less digits than its factorization.

65874787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988628.

The product of its digits is 2634240, while the sum is 52.

The square root of 65874787 is about 8116.3284186878. The cubic root of 65874787 is about 403.8682767475.

The spelling of 65874787 in words is "sixty-five million, eight hundred seventy-four thousand, seven hundred eighty-seven".