65274021 has 6 divisors (see below), whose sum is σ = 94284710. Its totient is φ = 43516008.

The previous prime is 65274019. The next prime is 65274029. The reversal of 65274021 is 12047256.

65274021 is a `hidden beast` number, since 652 + 7 + 4 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55577025 + 9696996 = 7455^2 + 3114^2 .

It is not a de Polignac number, because 65274021 - 2¹ = 65274019 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 (65274029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3626326 + ... + 3626343.

Almost surely, 2^65274021 is an apocalyptic number.

It is an amenable number.

65274021 is a deficient number, since it is larger than the sum of its proper divisors (29010689).

65274021 is a wasteful number, since it uses less digits than its factorization.

65274021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7252675 (or 7252672 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 65274021 is about 8079.2339364571. The cubic root of 65274021 is about 402.6367905623.

The spelling of 65274021 in words is "sixty-five million, two hundred seventy-four thousand, twenty-one".