8280657137 has 4 divisors (see below), whose sum is σ = 8282562036. Its totient is φ = 8278752240.

The previous prime is 8280657131. The next prime is 8280657157. The reversal of 8280657137 is 7317560828.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7952358976 + 328298161 = 89176^2 + 18119^2 .

It is a cyclic number.

It is not a de Polignac number, because 8280657137 - 2¹⁰ = 8280656113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8280657091 and 8280657100.

It is not an unprimeable number, because it can be changed into a prime (8280657131) 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, 945914 + ... + 954627.

It is an arithmetic number, because the mean of its divisors is an integer number (2070640509).

Almost surely, 2^8280657137 is an apocalyptic number.

It is an amenable number.

8280657137 is a deficient number, since it is larger than the sum of its proper divisors (1904899).

8280657137 is a wasteful number, since it uses less digits than its factorization.

8280657137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904898.

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 8280657137 is about 90998.1161178626. The cubic root of 8280657137 is about 2023.1198022781.

The spelling of 8280657137 in words is "eight billion, two hundred eighty million, six hundred fifty-seven thousand, one hundred thirty-seven".