671362449 has 4 divisors (see below), whose sum is σ = 895149936. Its totient is φ = 447574964.

The previous prime is 671362427. The next prime is 671362451. The reversal of 671362449 is 944263176.

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 671362449 - 2⁸ = 671362193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671362449.

It is not an unprimeable number, because it can be changed into a prime (671362409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111893739 + ... + 111893744.

It is an arithmetic number, because the mean of its divisors is an integer number (223787484).

Almost surely, 2^671362449 is an apocalyptic number.

It is an amenable number.

671362449 is a deficient number, since it is larger than the sum of its proper divisors (223787487).

671362449 is a wasteful number, since it uses less digits than its factorization.

671362449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223787486.

The product of its digits is 217728, while the sum is 42.

The square root of 671362449 is about 25910.6628437020. The cubic root of 671362449 is about 875.6267396558.

The spelling of 671362449 in words is "six hundred seventy-one million, three hundred sixty-two thousand, four hundred forty-nine".