647025067 has 4 divisors (see below), whose sum is σ = 696796240. Its totient is φ = 597253896.

The previous prime is 647025053. The next prime is 647025131. The reversal of 647025067 is 760520746.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647025067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647025047) 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, 24885567 + ... + 24885592.

It is an arithmetic number, because the mean of its divisors is an integer number (174199060).

Almost surely, 2^647025067 is an apocalyptic number.

647025067 is a deficient number, since it is larger than the sum of its proper divisors (49771173).

647025067 is a wasteful number, since it uses less digits than its factorization.

647025067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49771172.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 647025067 is about 25436.6874219109. The cubic root of 647025067 is about 864.9155438943.

The spelling of 647025067 in words is "six hundred forty-seven million, twenty-five thousand, sixty-seven".