671149245 has 32 divisors (see below), whose sum is σ = 1157917824. Its totient is φ = 329990400.

The previous prime is 671149189. The next prime is 671149279. The reversal of 671149245 is 542941176.

It is not a de Polignac number, because 671149245 - 2²⁴ = 654372029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 197410 + ... + 200780.

It is an arithmetic number, because the mean of its divisors is an integer number (36184932).

Almost surely, 2^671149245 is an apocalyptic number.

671149245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

671149245 is a deficient number, since it is larger than the sum of its proper divisors (486768579).

671149245 is a wasteful number, since it uses less digits than its factorization.

671149245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4413.

The product of its digits is 60480, while the sum is 39.

The square root of 671149245 is about 25906.5483034695. The cubic root of 671149245 is about 875.5340391634.

The spelling of 671149245 in words is "six hundred seventy-one million, one hundred forty-nine thousand, two hundred forty-five".