7678481385 has 8 divisors (see below), whose sum is σ = 12285570240. Its totient is φ = 4095190064.

The previous prime is 7678481383. The next prime is 7678481387. The reversal of 7678481385 is 5831848767.

It is an interprime number because it is at equal distance from previous prime (7678481383) and next prime (7678481387).

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 7678481385 - 2¹ = 7678481383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7678481383) 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, 255949365 + ... + 255949394.

It is an arithmetic number, because the mean of its divisors is an integer number (1535696280).

Almost surely, 2^7678481385 is an apocalyptic number.

It is an amenable number.

7678481385 is a deficient number, since it is larger than the sum of its proper divisors (4607088855).

7678481385 is a wasteful number, since it uses less digits than its factorization.

7678481385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511898767.

The product of its digits is 9031680, while the sum is 57.

The square root of 7678481385 is about 87626.9444006808. The cubic root of 7678481385 is about 1972.8396083001.

The spelling of 7678481385 in words is "seven billion, six hundred seventy-eight million, four hundred eighty-one thousand, three hundred eighty-five".