607865037649 has 3 divisors (see below), whose sum is σ = 607865817307. Its totient is φ = 607864257992.

The previous prime is 607865037641. The next prime is 607865037653. The reversal of 607865037649 is 946730568706.

The square root of 607865037649 is 779657.

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.

It can be written as a sum of positive squares in only one way, i.e., 353816780625 + 254048257024 = 594825^2 + 504032^2 .

It is not a de Polignac number, because 607865037649 - 2³ = 607865037641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (607865037641) 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, 389829 + ... + 1169485.

Almost surely, 2^607865037649 is an apocalyptic number.

607865037649 is the 779657-th square number.

607865037649 is the 389829-th centered octagonal number.

It is an amenable number.

607865037649 is a deficient number, since it is larger than the sum of its proper divisors (779658).

607865037649 is an frugal number, since it uses more digits than its factorization.

607865037649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559314 (or 779657 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 607865037649 in words is "six hundred seven billion, eight hundred sixty-five million, thirty-seven thousand, six hundred forty-nine".