674643137 has 4 divisors (see below), whose sum is σ = 771020736. Its totient is φ = 578265540.

The previous prime is 674643077. The next prime is 674643139. The reversal of 674643137 is 731346476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 674643137 - 2¹⁴ = 674626753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 674643094 and 674643103.

It is not an unprimeable number, because it can be changed into a prime (674643139) 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 3 ways as a sum of consecutive naturals, for example, 48188789 + ... + 48188802.

It is an arithmetic number, because the mean of its divisors is an integer number (192755184).

Almost surely, 2^674643137 is an apocalyptic number.

It is an amenable number.

674643137 is a deficient number, since it is larger than the sum of its proper divisors (96377599).

674643137 is an equidigital number, since it uses as much as digits as its factorization.

674643137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96377598.

The product of its digits is 254016, while the sum is 41.

The square root of 674643137 is about 25973.8933739245. The cubic root of 674643137 is about 877.0507055104.

The spelling of 674643137 in words is "six hundred seventy-four million, six hundred forty-three thousand, one hundred thirty-seven".