674994197 has 4 divisors (see below), whose sum is σ = 714699756. Its totient is φ = 635288640.

The previous prime is 674994079. The next prime is 674994241. The reversal of 674994197 is 791499476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220195921 + 454798276 = 14839^2 + 21326^2 .

It is not a de Polignac number, because 674994197 - 2⁸ = 674993941 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 (674996197) 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, 19852754 + ... + 19852787.

It is an arithmetic number, because the mean of its divisors is an integer number (178674939).

Almost surely, 2^674994197 is an apocalyptic number.

It is an amenable number.

674994197 is a deficient number, since it is larger than the sum of its proper divisors (39705559).

674994197 is a wasteful number, since it uses less digits than its factorization.

674994197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39705558.

The product of its digits is 3429216, while the sum is 56.

The square root of 674994197 is about 25980.6504345061. The cubic root of 674994197 is about 877.2028076678.

The spelling of 674994197 in words is "six hundred seventy-four million, nine hundred ninety-four thousand, one hundred ninety-seven".