969897645 has 40 divisors (see below), whose sum is σ = 1754100216. Its totient is φ = 512676864.

The previous prime is 969897641. The next prime is 969897653. The reversal of 969897645 is 546798969.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 87272964 + 882624681 = 9342^2 + 29709^2 .

It is not a de Polignac number, because 969897645 - 2² = 969897641 is a prime.

It is a super-3 number, since 3×969897645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (969897641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35169 + ... + 56361.

Almost surely, 2^969897645 is an apocalyptic number.

It is an amenable number.

969897645 is a deficient number, since it is larger than the sum of its proper divisors (784202571).

969897645 is a wasteful number, since it uses less digits than its factorization.

969897645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21323 (or 21314 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The square root of 969897645 is about 31143.1797509503. The cubic root of 969897645 is about 989.8634797974.

The spelling of 969897645 in words is "nine hundred sixty-nine million, eight hundred ninety-seven thousand, six hundred forty-five".