397754648573 has 8 divisors (see below), whose sum is σ = 435674463480. Its totient is φ = 361448442880.

The previous prime is 397754648513. The next prime is 397754648593. The reversal of 397754648573 is 375846457793.

It can be written as a sum of positive squares in 4 ways, for example, as 16476803044 + 381277845529 = 128362^2 + 617477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397754648573 - 2²⁴ = 397737871357 is a prime.

It is a super-2 number, since 2×397754648573² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397754648513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403401788 + ... + 403402773.

It is an arithmetic number, because the mean of its divisors is an integer number (54459307935).

Almost surely, 2^397754648573 is an apocalyptic number.

It is an amenable number.

397754648573 is a deficient number, since it is larger than the sum of its proper divisors (37919814907).

397754648573 is a wasteful number, since it uses less digits than its factorization.

397754648573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806804607.

The product of its digits is 533433600, while the sum is 68.

The spelling of 397754648573 in words is "three hundred ninety-seven billion, seven hundred fifty-four million, six hundred forty-eight thousand, five hundred seventy-three".