662646766197 has 16 divisors (see below), whose sum is σ = 1007462957760. Its totient is φ = 383795411712.

The previous prime is 662646766189. The next prime is 662646766213. The reversal of 662646766197 is 791667646266.

662646766197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 662646766197 - 2³ = 662646766189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662646766097) 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, 499732947 + ... + 499734272.

It is an arithmetic number, because the mean of its divisors is an integer number (62966434860).

Almost surely, 2^662646766197 is an apocalyptic number.

It is an amenable number.

662646766197 is a deficient number, since it is larger than the sum of its proper divisors (344816191563).

662646766197 is a wasteful number, since it uses less digits than its factorization.

662646766197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999467252.

The product of its digits is 164602368, while the sum is 66.

The spelling of 662646766197 in words is "six hundred sixty-two billion, six hundred forty-six million, seven hundred sixty-six thousand, one hundred ninety-seven".