997425740807 has 8 divisors (see below), whose sum is σ = 1029675595392. Its totient is φ = 965180563200.

The previous prime is 997425740789. The next prime is 997425740809. The reversal of 997425740807 is 708047524799.

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 997425740807 - 2¹⁸ = 997425478663 is a prime.

It is a super-6 number, since 6×997425740807⁶ (a number of 73 digits) contains 666666 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 997425740807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997425740809) 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, 733238 + ... + 1591379.

It is an arithmetic number, because the mean of its divisors is an integer number (128709449424).

Almost surely, 2^997425740807 is an apocalyptic number.

997425740807 is a deficient number, since it is larger than the sum of its proper divisors (32249854585).

997425740807 is a wasteful number, since it uses less digits than its factorization.

997425740807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338489.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 997425740807 in words is "nine hundred ninety-seven billion, four hundred twenty-five million, seven hundred forty thousand, eight hundred seven".