8240621770 has 8 divisors (see below), whose sum is σ = 14833119204. Its totient is φ = 3296248704.

The previous prime is 8240621761. The next prime is 8240621783. The reversal of 8240621770 is 771260428.

It can be written as a sum of positive squares in 2 ways, for example, as 7248308769 + 992313001 = 85137^2 + 31501^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412031079 + ... + 412031098.

Almost surely, 2^8240621770 is an apocalyptic number.

8240621770 is a deficient number, since it is larger than the sum of its proper divisors (6592497434).

8240621770 is a wasteful number, since it uses less digits than its factorization.

8240621770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824062184.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 8240621770 is about 90777.8704861488. The cubic root of 8240621770 is about 2019.8540699402.

The spelling of 8240621770 in words is "eight billion, two hundred forty million, six hundred twenty-one thousand, seven hundred seventy".