7665870745 has 16 divisors (see below), whose sum is σ = 9913477392. Its totient is φ = 5657057280.

The previous prime is 7665870713. The next prime is 7665870761. The reversal of 7665870745 is 5470785667.

It can be written as a sum of positive squares in 8 ways, for example, as 1036002969 + 6629867776 = 32187^2 + 81424^2 .

It is not a de Polignac number, because 7665870745 - 2⁵ = 7665870713 is a prime.

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, 56449 + ... + 136081.

It is an arithmetic number, because the mean of its divisors is an integer number (619592337).

Almost surely, 2^7665870745 is an apocalyptic number.

It is an amenable number.

7665870745 is a deficient number, since it is larger than the sum of its proper divisors (2247606647).

7665870745 is a wasteful number, since it uses less digits than its factorization.

7665870745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81132.

The product of its (nonzero) digits is 9878400, while the sum is 55.

The square root of 7665870745 is about 87554.9584261223. The cubic root of 7665870745 is about 1971.7589952192.

The spelling of 7665870745 in words is "seven billion, six hundred sixty-five million, eight hundred seventy thousand, seven hundred forty-five".