671522948 has 6 divisors (see below), whose sum is σ = 1175165166. Its totient is φ = 335761472.

The previous prime is 671522941. The next prime is 671522963. The reversal of 671522948 is 849225176.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 671431744 + 91204 = 25912^2 + 302^2 .

It is a super-2 number, since 2×671522948² = 901886139381221408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 671522899 and 671522908.

It is not an unprimeable number, because it can be changed into a prime (671522941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83940365 + ... + 83940372.

It is an arithmetic number, because the mean of its divisors is an integer number (195860861).

Almost surely, 2^671522948 is an apocalyptic number.

It is an amenable number.

671522948 is a deficient number, since it is larger than the sum of its proper divisors (503642218).

671522948 is a wasteful number, since it uses less digits than its factorization.

671522948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167880741 (or 167880739 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 671522948 is about 25913.7598198332. The cubic root of 671522948 is about 875.6965112169.

The spelling of 671522948 in words is "six hundred seventy-one million, five hundred twenty-two thousand, nine hundred forty-eight".