671301956 has 12 divisors (see below), whose sum is σ = 1265146092. Its totient is φ = 309831648.

The previous prime is 671301923. The next prime is 671301997. The reversal of 671301956 is 659103176.

It can be written as a sum of positive squares in 2 ways, for example, as 464402500 + 206899456 = 21550^2 + 14384^2 .

It is a super-2 number, since 2×671301956² = 901292632258851872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6454775 + ... + 6454878.

It is an arithmetic number, because the mean of its divisors is an integer number (105428841).

Almost surely, 2^671301956 is an apocalyptic number.

It is an amenable number.

671301956 is a deficient number, since it is larger than the sum of its proper divisors (593844136).

671301956 is a wasteful number, since it uses less digits than its factorization.

671301956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12909670 (or 12909668 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 671301956 is about 25909.4954794569. The cubic root of 671301956 is about 875.6004394661.

The spelling of 671301956 in words is "six hundred seventy-one million, three hundred one thousand, nine hundred fifty-six".