7681423810 has 8 divisors (see below), whose sum is σ = 13826562876. Its totient is φ = 3072569520.

The previous prime is 7681423777. The next prime is 7681423817. The reversal of 7681423810 is 183241867.

It can be written as a sum of positive squares in 2 ways, for example, as 7557346489 + 124077321 = 86933^2 + 11139^2 .

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

It is a super-2 number, since 2×7681423810² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7681423817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384071181 + ... + 384071200.

Almost surely, 2^7681423810 is an apocalyptic number.

7681423810 is a deficient number, since it is larger than the sum of its proper divisors (6145139066).

7681423810 is a wasteful number, since it uses less digits than its factorization.

7681423810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768142388.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 7681423810 is about 87643.7322915906. The cubic root of 7681423810 is about 1973.0915761463.

The spelling of 7681423810 in words is "seven billion, six hundred eighty-one million, four hundred twenty-three thousand, eight hundred ten".