6406687084 has 48 divisors (see below), whose sum is σ = 13086976000. Its totient is φ = 2743182288.

The previous prime is 6406687081. The next prime is 6406687087. The reversal of 6406687084 is 4807866046.

It is an interprime number because it is at equal distance from previous prime (6406687081) and next prime (6406687087).

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (6406687081) 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, 2939107 + ... + 2941285.

Almost surely, 2^6406687084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6406687084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6543488000).

6406687084 is an abundant number, since it is smaller than the sum of its proper divisors (6680288916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6406687084 is a wasteful number, since it uses less digits than its factorization.

6406687084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347 (or 4331 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

The square root of 6406687084 is about 80041.7833634409. The cubic root of 6406687084 is about 1857.2819478277.

The spelling of 6406687084 in words is "six billion, four hundred six million, six hundred eighty-seven thousand, eighty-four".