6244664551 has 8 divisors (see below), whose sum is σ = 6391592064. Its totient is φ = 6097814520.

The previous prime is 6244664497. The next prime is 6244664563. The reversal of 6244664551 is 1554664426.

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

It is not a de Polignac number, because 6244664551 - 2¹⁷ = 6244533479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6244664498 and 6244664507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6244664651) 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, 163830 + ... + 198316.

It is an arithmetic number, because the mean of its divisors is an integer number (798949008).

Almost surely, 2^6244664551 is an apocalyptic number.

6244664551 is a deficient number, since it is larger than the sum of its proper divisors (146927513).

6244664551 is a wasteful number, since it uses less digits than its factorization.

6244664551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38741.

The product of its digits is 691200, while the sum is 43.

The square root of 6244664551 is about 79023.1899571259. The cubic root of 6244664551 is about 1841.4914411048.

The spelling of 6244664551 in words is "six billion, two hundred forty-four million, six hundred sixty-four thousand, five hundred fifty-one".