674865421 has 8 divisors (see below), whose sum is σ = 678042144. Its totient is φ = 671695920.

The previous prime is 674865407. The next prime is 674865431. The reversal of 674865421 is 124568476.

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 674865421 - 2¹¹ = 674863373 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 (674865431) 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, 278706 + ... + 281116.

It is an arithmetic number, because the mean of its divisors is an integer number (84755268).

Almost surely, 2^674865421 is an apocalyptic number.

It is an amenable number.

674865421 is a deficient number, since it is larger than the sum of its proper divisors (3176723).

674865421 is a wasteful number, since it uses less digits than its factorization.

674865421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611.

The product of its digits is 322560, while the sum is 43.

The square root of 674865421 is about 25978.1720103629. The cubic root of 674865421 is about 877.1470196063.

The spelling of 674865421 in words is "six hundred seventy-four million, eight hundred sixty-five thousand, four hundred twenty-one".