671220250 has 16 divisors (see below), whose sum is σ = 1256524776. Its totient is φ = 268488000.

The previous prime is 671220241. The next prime is 671220269. The reversal of 671220250 is 52022176.

It can be written as a sum of positive squares in 4 ways, for example, as 137194369 + 534025881 = 11713^2 + 23109^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1342191 + ... + 1342690.

Almost surely, 2^671220250 is an apocalyptic number.

671220250 is a deficient number, since it is larger than the sum of its proper divisors (585304526).

671220250 is a wasteful number, since it uses less digits than its factorization.

671220250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684898 (or 2684888 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 671220250 is about 25907.9186736411. The cubic root of 671220250 is about 875.5649141154.

It can be divided in two parts, 6712 and 20250, that added together give a palindrome (26962).

The spelling of 671220250 in words is "six hundred seventy-one million, two hundred twenty thousand, two hundred fifty".