7669352821 has 8 divisors (see below), whose sum is σ = 8344451864. Its totient is φ = 7006417920.

The previous prime is 7669352809. The next prime is 7669352833. The reversal of 7669352821 is 1282539667.

It is an interprime number because it is at equal distance from previous prime (7669352809) and next prime (7669352833).

It can be written as a sum of positive squares in 4 ways, for example, as 996096721 + 6673256100 = 31561^2 + 81690^2 .

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 7669352821 - 2⁷ = 7669352693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7669352221) 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, 3039720 + ... + 3042241.

It is an arithmetic number, because the mean of its divisors is an integer number (1043056483).

Almost surely, 2^7669352821 is an apocalyptic number.

It is an amenable number.

7669352821 is a deficient number, since it is larger than the sum of its proper divisors (675099043).

7669352821 is a wasteful number, since it uses less digits than its factorization.

7669352821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082071.

The product of its digits is 1088640, while the sum is 49.

The square root of 7669352821 is about 87574.8412559224. The cubic root of 7669352821 is about 1972.0574947030.

The spelling of 7669352821 in words is "seven billion, six hundred sixty-nine million, three hundred fifty-two thousand, eight hundred twenty-one".