6651007890 has 32 divisors (see below), whose sum is σ = 16393838400. Its totient is φ = 1725666624.

The previous prime is 6651007877. The next prime is 6651007919. The reversal of 6651007890 is 987001566.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2994840 + ... + 2997059.

It is an arithmetic number, because the mean of its divisors is an integer number (512307450).

Almost surely, 2^6651007890 is an apocalyptic number.

6651007890 is an abundant number, since it is smaller than the sum of its proper divisors (9742830510).

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

6651007890 is a wasteful number, since it uses less digits than its factorization.

6651007890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5991946.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 6651007890 is about 81553.7116874517. The cubic root of 6651007890 is about 1880.5973552557.

The spelling of 6651007890 in words is "six billion, six hundred fifty-one million, seven thousand, eight hundred ninety".