674346056720021 has 16 divisors (see below), whose sum is σ = 771957179274240. Its totient is φ = 577053942652800.

The previous prime is 674346056719901. The next prime is 674346056720029. The reversal of 674346056720021 is 120027650643476.

It is a cyclic number.

It is not a de Polignac number, because 674346056720021 - 2³⁰ = 674344982978197 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 (674346056720029) 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, 579836735 + ... + 580998563.

It is an arithmetic number, because the mean of its divisors is an integer number (48247323704640).

Almost surely, 2^{674346056720021} is an apocalyptic number.

It is an amenable number.

674346056720021 is a deficient number, since it is larger than the sum of its proper divisors (97611122554219).

674346056720021 is a wasteful number, since it uses less digits than its factorization.

674346056720021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299044.

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 674346056720021 in words is "six hundred seventy-four trillion, three hundred forty-six billion, fifty-six million, seven hundred twenty thousand, twenty-one".