1996565697 has 48 divisors (see below), whose sum is σ = 3610189440. Its totient is φ = 1036740096.

The previous prime is 1996565689. The next prime is 1996565707. The reversal of 1996565697 is 7965656991.

1996565697 is a `hidden beast` number, since 1 + 9 + 9 + 6 + 565 + 69 + 7 = 666.

It is not a de Polignac number, because 1996565697 - 2³ = 1996565689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1996565617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1083 + ... + 63200.

It is an arithmetic number, because the mean of its divisors is an integer number (75212280).

Almost surely, 2^1996565697 is an apocalyptic number.

1996565697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1996565697 is a deficient number, since it is larger than the sum of its proper divisors (1613623743).

1996565697 is a wasteful number, since it uses less digits than its factorization.

1996565697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64342 (or 64339 counting only the distinct ones).

The product of its digits is 27556200, while the sum is 63.

The square root of 1996565697 is about 44682.9463777849. The cubic root of 1996565697 is about 1259.1994782810.

The spelling of 1996565697 in words is "one billion, nine hundred ninety-six million, five hundred sixty-five thousand, six hundred ninety-seven".