997686701 has 16 divisors (see below), whose sum is σ = 1163004480. Its totient is φ = 845786880.

The previous prime is 997686691. The next prime is 997686721. The reversal of 997686701 is 107686799.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997686701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997686721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4091 + ... + 44856.

It is an arithmetic number, because the mean of its divisors is an integer number (72687780).

Almost surely, 2^997686701 is an apocalyptic number.

It is an amenable number.

997686701 is a deficient number, since it is larger than the sum of its proper divisors (165317779).

997686701 is a wasteful number, since it uses less digits than its factorization.

997686701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49084.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 997686701 is about 31586.1789553596. The cubic root of 997686701 is about 999.2283049733.

The spelling of 997686701 in words is "nine hundred ninety-seven million, six hundred eighty-six thousand, seven hundred one".