6625989487 has 16 divisors (see below), whose sum is σ = 7177709952. Its totient is φ = 6080358240.

The previous prime is 6625989481. The next prime is 6625989493. The reversal of 6625989487 is 7849895266.

It is an interprime number because it is at equal distance from previous prime (6625989481) and next prime (6625989493).

It is a cyclic number.

It is not a de Polignac number, because 6625989487 - 2²³ = 6617600879 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 (6625989481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2793412 + ... + 2795782.

It is an arithmetic number, because the mean of its divisors is an integer number (448606872).

Almost surely, 2^6625989487 is an apocalyptic number.

6625989487 is a deficient number, since it is larger than the sum of its proper divisors (551720465).

6625989487 is a wasteful number, since it uses less digits than its factorization.

6625989487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558.

The product of its digits is 52254720, while the sum is 64.

The square root of 6625989487 is about 81400.1811238771. The cubic root of 6625989487 is about 1878.2363767557.

The spelling of 6625989487 in words is "six billion, six hundred twenty-five million, nine hundred eighty-nine thousand, four hundred eighty-seven".