997136001 has 10 divisors (see below), whose sum is σ = 1489548962. Its totient is φ = 664757280.

The previous prime is 997135991. The next prime is 997136027. The reversal of 997136001 is 100631799.

It can be written as a sum of positive squares in only one way, i.e., 564537600 + 432598401 = 23760^2 + 20799^2 .

It is not a de Polignac number, because 997136001 - 2⁷ = 997135873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997136401) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6155080 + ... + 6155241.

Almost surely, 2^997136001 is an apocalyptic number.

It is an amenable number.

997136001 is a deficient number, since it is larger than the sum of its proper divisors (492412961).

997136001 is a wasteful number, since it uses less digits than its factorization.

997136001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310333 (or 12310324 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 997136001 is about 31577.4603316986. The cubic root of 997136001 is about 999.0444208260.

The spelling of 997136001 in words is "nine hundred ninety-seven million, one hundred thirty-six thousand, one".