7660344157 has 8 divisors (see below), whose sum is σ = 7712375000. Its totient is φ = 7608354624.

The previous prime is 7660344121. The next prime is 7660344161. The reversal of 7660344157 is 7514430667.

It can be written as a sum of positive squares in 4 ways, for example, as 304537401 + 7355806756 = 17451^2 + 85766^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7660344157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7660344457) 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, 422719 + ... + 440467.

It is an arithmetic number, because the mean of its divisors is an integer number (964046875).

Almost surely, 2^7660344157 is an apocalyptic number.

It is an amenable number.

7660344157 is a deficient number, since it is larger than the sum of its proper divisors (52030843).

7660344157 is a wasteful number, since it uses less digits than its factorization.

7660344157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20655.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 7660344157 is about 87523.3920560669. The cubic root of 7660344157 is about 1971.2850451744.

The spelling of 7660344157 in words is "seven billion, six hundred sixty million, three hundred forty-four thousand, one hundred fifty-seven".