997447601 has 8 divisors (see below), whose sum is σ = 1053991680. Its totient is φ = 942001632.

The previous prime is 997447553. The next prime is 997447609. The reversal of 997447601 is 106744799.

It is a happy number.

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 997447601 - 2¹⁰ = 997446577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997447609) 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, 272660 + ... + 276293.

It is an arithmetic number, because the mean of its divisors is an integer number (131748960).

Almost surely, 2^997447601 is an apocalyptic number.

It is an amenable number.

997447601 is a deficient number, since it is larger than the sum of its proper divisors (56544079).

997447601 is a wasteful number, since it uses less digits than its factorization.

997447601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549055.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 997447601 is about 31582.3938453056. The cubic root of 997447601 is about 999.1484754451.

It can be divided in two parts, 9974 and 47601, that added together give a palindrome (57575).

The spelling of 997447601 in words is "nine hundred ninety-seven million, four hundred forty-seven thousand, six hundred one".