6973409645 has 4 divisors (see below), whose sum is σ = 8368091580. Its totient is φ = 5578727712.

The previous prime is 6973409623. The next prime is 6973409789. The reversal of 6973409645 is 5469043796.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2478645796 + 4494763849 = 49786^2 + 67043^2 .

It is a cyclic number.

It is not a de Polignac number, because 6973409645 - 2⁶ = 6973409581 is a prime.

It is a super-3 number, since 3×6973409645³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697340960 + ... + 697340969.

It is an arithmetic number, because the mean of its divisors is an integer number (2092022895).

Almost surely, 2^6973409645 is an apocalyptic number.

It is an amenable number.

6973409645 is a deficient number, since it is larger than the sum of its proper divisors (1394681935).

6973409645 is a wasteful number, since it uses less digits than its factorization.

6973409645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394681934.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The square root of 6973409645 is about 83506.9436933241. The cubic root of 6973409645 is about 1910.5059417342.

The spelling of 6973409645 in words is "six billion, nine hundred seventy-three million, four hundred nine thousand, six hundred forty-five".