674040814781 has 8 divisors (see below), whose sum is σ = 714671979840. Its totient is φ = 633518728128.

The previous prime is 674040814753. The next prime is 674040814801. The reversal of 674040814781 is 187418040476.

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 674040814781 - 2¹⁸ = 674040552637 is a prime.

It is a super-2 number, since 2×674040814781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674040814081) 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, 27256871 + ... + 27281588.

It is an arithmetic number, because the mean of its divisors is an integer number (89333997480).

Almost surely, 2^674040814781 is an apocalyptic number.

It is an amenable number.

674040814781 is a deficient number, since it is larger than the sum of its proper divisors (40631165059).

674040814781 is a wasteful number, since it uses less digits than its factorization.

674040814781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54539203.

The product of its (nonzero) digits is 1204224, while the sum is 50.

The spelling of 674040814781 in words is "six hundred seventy-four billion, forty million, eight hundred fourteen thousand, seven hundred eighty-one".