674123070722521 has 8 divisors (see below), whose sum is σ = 770431811265920. Its totient is φ = 577815691360608.

The previous prime is 674123070722513. The next prime is 674123070722539. The reversal of 674123070722521 is 125227070321476.

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 674123070722521 - 2³ = 674123070722513 is a prime.

It is a super-2 number, since 2×674123070722521² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674123070722581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339233901 + ... + 341215306.

It is an arithmetic number, because the mean of its divisors is an integer number (96303976408240).

Almost surely, 2^{674123070722521} is an apocalyptic number.

It is an amenable number.

674123070722521 is a deficient number, since it is larger than the sum of its proper divisors (96308740543399).

674123070722521 is a wasteful number, since it uses less digits than its factorization.

674123070722521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680590743.

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 674123070722521 in words is "six hundred seventy-four trillion, one hundred twenty-three billion, seventy million, seven hundred twenty-two thousand, five hundred twenty-one".