674401401 has 6 divisors (see below), whose sum is σ = 974135370. Its totient is φ = 449600928.

The previous prime is 674401391. The next prime is 674401417. The reversal of 674401401 is 104104476.

It can be written as a sum of positive squares in only one way, i.e., 468765801 + 205635600 = 21651^2 + 14340^2 .

It is not a de Polignac number, because 674401401 - 2²¹ = 672304249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (674401501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37466736 + ... + 37466753.

It is an arithmetic number, because the mean of its divisors is an integer number (162355895).

Almost surely, 2^674401401 is an apocalyptic number.

It is an amenable number.

674401401 is a deficient number, since it is larger than the sum of its proper divisors (299733969).

674401401 is a wasteful number, since it uses less digits than its factorization.

674401401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74933495 (or 74933492 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 674401401 is about 25969.2395152419. The cubic root of 674401401 is about 876.9459389824.

Adding to 674401401 its reverse (104104476), we get a palindrome (778505877).

The spelling of 674401401 in words is "six hundred seventy-four million, four hundred one thousand, four hundred one".