7264140647 has 4 divisors (see below), whose sum is σ = 7691443056. Its totient is φ = 6836838240.

The previous prime is 7264140643. The next prime is 7264140649. The reversal of 7264140647 is 7460414627.

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

It is a cyclic number.

It is not a de Polignac number, because 7264140647 - 2² = 7264140643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7264140641) 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, 213651179 + ... + 213651212.

It is an arithmetic number, because the mean of its divisors is an integer number (1922860764).

Almost surely, 2^7264140647 is an apocalyptic number.

7264140647 is a deficient number, since it is larger than the sum of its proper divisors (427302409).

7264140647 is a wasteful number, since it uses less digits than its factorization.

7264140647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427302408.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 7264140647 is about 85229.9281180032. The cubic root of 7264140647 is about 1936.6958180585.

The spelling of 7264140647 in words is "seven billion, two hundred sixty-four million, one hundred forty thousand, six hundred forty-seven".