65274989 has 16 divisors (see below), whose sum is σ = 75073152. Its totient is φ = 56282688.

The previous prime is 65274949. The next prime is 65274997. The reversal of 65274989 is 98947256.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65274989 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65274929) 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, 10319 + ... + 15395.

It is an arithmetic number, because the mean of its divisors is an integer number (4692072).

Almost surely, 2^65274989 is an apocalyptic number.

It is an amenable number.

65274989 is a deficient number, since it is larger than the sum of its proper divisors (9798163).

65274989 is a wasteful number, since it uses less digits than its factorization.

65274989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156.

The product of its digits is 1088640, while the sum is 50.

The square root of 65274989 is about 8079.2938429048. The cubic root of 65274989 is about 402.6387808921.

The spelling of 65274989 in words is "sixty-five million, two hundred seventy-four thousand, nine hundred eighty-nine".