674847463081 has 81 divisors (see below), whose sum is σ = 828059580439. Its totient is φ = 549413180800.

The previous prime is 674847463079. The next prime is 674847463117. The reversal of 674847463081 is 180364748476.

It is a happy number.

The square root of 674847463081 is 821491.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 525400274025 + 149447189056 = 724845^2 + 386584^2 .

It is not a de Polignac number, because 674847463081 - 2¹ = 674847463079 is a prime.

It is a super-2 number, since 2×674847463081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674847463001) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3533232696 + ... + 3533232886.

Almost surely, 2^674847463081 is an apocalyptic number.

674847463081 is the 821491-st square number.

674847463081 is the 410746-th centered octagonal number.

It is an amenable number.

674847463081 is a deficient number, since it is larger than the sum of its proper divisors (153212117358).

674847463081 is a wasteful number, since it uses less digits than its factorization.

674847463081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 58.

The spelling of 674847463081 in words is "six hundred seventy-four billion, eight hundred forty-seven million, four hundred sixty-three thousand, eighty-one".