4640642247 has 8 divisors (see below), whose sum is σ = 6387120640. Its totient is φ = 2993962680.

The previous prime is 4640642203. The next prime is 4640642291. The reversal of 4640642247 is 7422460464.

It is a happy number.

4640642247 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4640642203) and next prime (4640642291).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4640642247 - 2¹⁰ = 4640641223 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 (4640642297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24949597 + ... + 24949782.

It is an arithmetic number, because the mean of its divisors is an integer number (798390080).

Almost surely, 2^4640642247 is an apocalyptic number.

4640642247 is a deficient number, since it is larger than the sum of its proper divisors (1746478393).

4640642247 is a wasteful number, since it uses less digits than its factorization.

4640642247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49899413.

The product of its (nonzero) digits is 258048, while the sum is 39.

The square root of 4640642247 is about 68122.2595558897. The cubic root of 4640642247 is about 1667.9871342940.

The spelling of 4640642247 in words is "four billion, six hundred forty million, six hundred forty-two thousand, two hundred forty-seven".