599607081649 has 3 divisors (see below), whose sum is σ = 599607855993. Its totient is φ = 599606307306.

The previous prime is 599607081643. The next prime is 599607081653. The reversal of 599607081649 is 946180706995.

The square root of 599607081649 is 774343.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 946180706995 = 5 ⋅189236141399.

It is not a de Polignac number, because 599607081649 - 2¹¹ = 599607079601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (599607081643) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 387172 + ... + 1161514.

It is an arithmetic number, because the mean of its divisors is an integer number (199869285331).

Almost surely, 2^599607081649 is an apocalyptic number.

599607081649 is the 774343-rd square number.

599607081649 is the 387172-nd centered octagonal number.

It is an amenable number.

599607081649 is a deficient number, since it is larger than the sum of its proper divisors (774344).

599607081649 is an frugal number, since it uses more digits than its factorization.

599607081649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548686 (or 774343 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 64.

Multiplying 599607081649 by its sum of digits (64), we get a square (38374853225536 = 6194744²).

The spelling of 599607081649 in words is "five hundred ninety-nine billion, six hundred seven million, eighty-one thousand, six hundred forty-nine".