3872678765 has 8 divisors (see below), whose sum is σ = 4651457400. Its totient is φ = 3095314432.

The previous prime is 3872678759. The next prime is 3872678807. The reversal of 3872678765 is 5678762783.

It can be written as a sum of positive squares in 4 ways, for example, as 321233929 + 3551444836 = 17923^2 + 59594^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3872678765 - 2⁶ = 3872678701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347540 + ... + 358509.

It is an arithmetic number, because the mean of its divisors is an integer number (581432175).

Almost surely, 2^3872678765 is an apocalyptic number.

It is an amenable number.

3872678765 is a deficient number, since it is larger than the sum of its proper divisors (778778635).

3872678765 is a wasteful number, since it uses less digits than its factorization.

3872678765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707151.

The product of its digits is 23708160, while the sum is 59.

The square root of 3872678765 is about 62230.8505887554. The cubic root of 3872678765 is about 1570.3766341863.

The spelling of 3872678765 in words is "three billion, eight hundred seventy-two million, six hundred seventy-eight thousand, seven hundred sixty-five".