674502480961 has 3 divisors (see below), whose sum is σ = 674503302243. Its totient is φ = 674501659680.

The previous prime is 674502480947. The next prime is 674502480979. The reversal of 674502480961 is 169084205476.

The square root of 674502480961 is 821281.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 83387535361 + 591114945600 = 288769^2 + 768840^2 .

It is not a de Polignac number, because 674502480961 - 2¹¹ = 674502478913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 674502480899 and 674502480908.

It is not an unprimeable number, because it can be changed into a prime (674502480361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 410641 + ... + 1231921.

It is an arithmetic number, because the mean of its divisors is an integer number (224834434081).

Almost surely, 2^674502480961 is an apocalyptic number.

674502480961 is the 821281-st square number.

674502480961 is the 410641-st centered octagonal number.

It is an amenable number.

674502480961 is a deficient number, since it is larger than the sum of its proper divisors (821282).

674502480961 is an frugal number, since it uses more digits than its factorization.

674502480961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642562 (or 821281 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 674502480961 in words is "six hundred seventy-four billion, five hundred two million, four hundred eighty thousand, nine hundred sixty-one".