6870042990 has 192 divisors, whose sum is σ = 19516723200. Its totient is φ = 1674924480.

The previous prime is 6870042973. The next prime is 6870042997. The reversal of 6870042990 is 992400786.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6870042997) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19136431 + ... + 19136789.

It is an arithmetic number, because the mean of its divisors is an integer number (101649600).

Almost surely, 2^6870042990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6870042990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9758361600).

6870042990 is an abundant number, since it is smaller than the sum of its proper divisors (12646680210).

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

6870042990 is a wasteful number, since it uses less digits than its factorization.

6870042990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 6870042990 is about 82885.7224737771. The cubic root of 6870042990 is about 1901.0191199345.

The spelling of 6870042990 in words is "six billion, eight hundred seventy million, forty-two thousand, nine hundred ninety".