7639006890 has 64 divisors (see below), whose sum is σ = 18605972736. Its totient is φ = 2006871552.

The previous prime is 7639006883. The next prime is 7639006897. The reversal of 7639006890 is 986009367.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7639006883) and next prime (7639006897).

It is not an unprimeable number, because it can be changed into a prime (7639006897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2852232 + ... + 2854908.

It is an arithmetic number, because the mean of its divisors is an integer number (290718324).

Almost surely, 2^7639006890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7639006890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9302986368).

7639006890 is an abundant number, since it is smaller than the sum of its proper divisors (10966965846).

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

7639006890 is a wasteful number, since it uses less digits than its factorization.

7639006890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 7639006890 is about 87401.4124027753. The cubic root of 7639006890 is about 1969.4530583297.

The spelling of 7639006890 in words is "seven billion, six hundred thirty-nine million, six thousand, eight hundred ninety".