7678106497 has 4 divisors (see below), whose sum is σ = 7942868820. Its totient is φ = 7413344176.

The previous prime is 7678106477. The next prime is 7678106503. The reversal of 7678106497 is 7946018767.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7946018767 = 1973 ⋅4027379.

It can be written as a sum of positive squares in 2 ways, for example, as 4722988176 + 2955118321 = 68724^2 + 54361^2 .

It is a cyclic number.

It is not a de Polignac number, because 7678106497 - 2²⁷ = 7543888769 is a prime.

It is a super-2 number, since 2×7678106497² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7678106477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132381118 + ... + 132381175.

It is an arithmetic number, because the mean of its divisors is an integer number (1985717205).

Almost surely, 2^7678106497 is an apocalyptic number.

It is an amenable number.

7678106497 is a deficient number, since it is larger than the sum of its proper divisors (264762323).

7678106497 is a wasteful number, since it uses less digits than its factorization.

7678106497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264762322.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The square root of 7678106497 is about 87624.8052608392. The cubic root of 7678106497 is about 1972.8075009994.

The spelling of 7678106497 in words is "seven billion, six hundred seventy-eight million, one hundred six thousand, four hundred ninety-seven".