7679278821 has 8 divisors (see below), whose sum is σ = 10296240480. Its totient is φ = 5090918192.

The previous prime is 7679278799. The next prime is 7679278823. The reversal of 7679278821 is 1288729767.

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 7679278821 - 2⁶ = 7679278757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7679278823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7149630 + ... + 7150703.

It is an arithmetic number, because the mean of its divisors is an integer number (1287030060).

Almost surely, 2^7679278821 is an apocalyptic number.

It is an amenable number.

7679278821 is a deficient number, since it is larger than the sum of its proper divisors (2616961659).

7679278821 is a wasteful number, since it uses less digits than its factorization.

7679278821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14300515.

The product of its digits is 4741632, while the sum is 57.

The square root of 7679278821 is about 87631.4944583282. The cubic root of 7679278821 is about 1972.9079012688.

The spelling of 7679278821 in words is "seven billion, six hundred seventy-nine million, two hundred seventy-eight thousand, eight hundred twenty-one".