7065719640 has 768 divisors, whose sum is σ = 29154816000. Its totient is φ = 1515386880.

The previous prime is 7065719627. The next prime is 7065719681. The reversal of 7065719640 is 469175607.

It is a happy number.

7065719640 is a `hidden beast` number, since 70 + 6 + 571 + 9 + 6 + 4 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 96790644 + ... + 96790716.

It is an arithmetic number, because the mean of its divisors is an integer number (37962000).

Almost surely, 2^7065719640 is an apocalyptic number.

7065719640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7065719640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14577408000).

7065719640 is an abundant number, since it is smaller than the sum of its proper divisors (22089096360).

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

7065719640 is a wasteful number, since it uses less digits than its factorization.

7065719640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 7065719640 is about 84057.8350898951. The cubic root of 7065719640 is about 1918.8990758842.

The spelling of 7065719640 in words is "seven billion, sixty-five million, seven hundred nineteen thousand, six hundred forty".