65674563421 has 8 divisors (see below), whose sum is σ = 70517179584. Its totient is φ = 60940770240.

The previous prime is 65674563419. The next prime is 65674563431. The reversal of 65674563421 is 12436547656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65674563421 - 2¹ = 65674563419 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 (65674563401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27204495 + ... + 27206908.

It is an arithmetic number, because the mean of its divisors is an integer number (8814647448).

Almost surely, 2^65674563421 is an apocalyptic number.

It is an amenable number.

65674563421 is a deficient number, since it is larger than the sum of its proper divisors (4842616163).

65674563421 is a wasteful number, since it uses less digits than its factorization.

65674563421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54411491.

The product of its digits is 3628800, while the sum is 49.

The spelling of 65674563421 in words is "sixty-five billion, six hundred seventy-four million, five hundred sixty-three thousand, four hundred twenty-one".