671956954 has 8 divisors (see below), whose sum is σ = 1032519348. Its totient is φ = 327783840.

The previous prime is 671956951. The next prime is 671956991. The reversal of 671956954 is 459659176.

It can be written as a sum of positive squares in 2 ways, for example, as 616379929 + 55577025 = 24827^2 + 7455^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×671956954² = 903052296057916232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671956951) 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, 4097217 + ... + 4097380.

Almost surely, 2^671956954 is an apocalyptic number.

671956954 is a deficient number, since it is larger than the sum of its proper divisors (360562394).

671956954 is a wasteful number, since it uses less digits than its factorization.

671956954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8194640.

The product of its digits is 2041200, while the sum is 52.

The square root of 671956954 is about 25922.1325125847. The cubic root of 671956954 is about 875.8851251198.

The spelling of 671956954 in words is "six hundred seventy-one million, nine hundred fifty-six thousand, nine hundred fifty-four".