6514640207 has 4 divisors (see below), whose sum is σ = 6514801656. Its totient is φ = 6514478760.

The previous prime is 6514640161. The next prime is 6514640233. The reversal of 6514640207 is 7020464156.

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 is a cyclic number.

It is not a de Polignac number, because 6514640207 - 2²⁸ = 6246204751 is a prime.

It is a super-2 number, since 2×6514640207² = 84881074053322005698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6514600207) 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, 38393 + ... + 120429.

It is an arithmetic number, because the mean of its divisors is an integer number (1628700414).

Almost surely, 2^6514640207 is an apocalyptic number.

6514640207 is a deficient number, since it is larger than the sum of its proper divisors (161449).

6514640207 is an equidigital number, since it uses as much as digits as its factorization.

6514640207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161448.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 6514640207 is about 80713.3211248304. The cubic root of 6514640207 is about 1867.6556748460.

The spelling of 6514640207 in words is "six billion, five hundred fourteen million, six hundred forty thousand, two hundred seven".