974865946609 has 3 divisors (see below), whose sum is σ = 974866933963. Its totient is φ = 974864959256.

The previous prime is 974865946591. The next prime is 974865946673. The reversal of 974865946609 is 906649568479.

The square root of 974865946609 is 987353.

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., 513379415025 + 461486531584 = 716505^2 + 679328^2 .

It is not a de Polignac number, because 974865946609 - 2²³ = 974857558001 is a prime.

It is a super-2 number, since 2×974865946609² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (974865946709) 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, 493677 + ... + 1481029.

Almost surely, 2^974865946609 is an apocalyptic number.

974865946609 is the 987353-rd square number.

974865946609 is the 493677-th centered octagonal number.

It is an amenable number.

974865946609 is a deficient number, since it is larger than the sum of its proper divisors (987354).

974865946609 is an frugal number, since it uses more digits than its factorization.

974865946609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974706 (or 987353 counting only the distinct ones).

The product of its (nonzero) digits is 705438720, while the sum is 73.

The spelling of 974865946609 in words is "nine hundred seventy-four billion, eight hundred sixty-five million, nine hundred forty-six thousand, six hundred nine".