264102649 has 4 divisors (see below), whose sum is σ = 265875300. Its totient is φ = 262330000.

The previous prime is 264102647. The next prime is 264102653. The reversal of 264102649 is 946201462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54287424 + 209815225 = 7368^2 + 14485^2 .

It is a cyclic number.

It is not a de Polignac number, because 264102649 - 2¹ = 264102647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264102647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886102 + ... + 886399.

It is an arithmetic number, because the mean of its divisors is an integer number (66468825).

Almost surely, 2^264102649 is an apocalyptic number.

It is an amenable number.

264102649 is a deficient number, since it is larger than the sum of its proper divisors (1772651).

264102649 is a wasteful number, since it uses less digits than its factorization.

264102649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772650.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 264102649 is about 16251.2353068928. The cubic root of 264102649 is about 641.5899992132.

The spelling of 264102649 in words is "two hundred sixty-four million, one hundred two thousand, six hundred forty-nine".