7677970221 has 16 divisors (see below), whose sum is σ = 10478166336. Its totient is φ = 4998274176.

The previous prime is 7677970127. The next prime is 7677970241. The reversal of 7677970221 is 1220797767.

It is not a de Polignac number, because 7677970221 - 2³¹ = 5530486573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7677970241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775921 + ... + 785753.

It is an arithmetic number, because the mean of its divisors is an integer number (654885396).

Almost surely, 2^7677970221 is an apocalyptic number.

It is an amenable number.

7677970221 is a deficient number, since it is larger than the sum of its proper divisors (2800196115).

7677970221 is a wasteful number, since it uses less digits than its factorization.

7677970221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15932.

The product of its (nonzero) digits is 518616, while the sum is 48.

The square root of 7677970221 is about 87624.0276465308. The cubic root of 7677970221 is about 1972.7958293758.

The spelling of 7677970221 in words is "seven billion, six hundred seventy-seven million, nine hundred seventy thousand, two hundred twenty-one".