659498659 has 4 divisors (see below), whose sum is σ = 663142480. Its totient is φ = 655854840.

The previous prime is 659498617. The next prime is 659498699. The reversal of 659498659 is 956894956.

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

It is a cyclic number.

It is not a de Polignac number, because 659498659 - 2¹³ = 659490467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 659498597 and 659498606.

It is not an unprimeable number, because it can be changed into a prime (659498699) 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, 1821639 + ... + 1822000.

It is an arithmetic number, because the mean of its divisors is an integer number (165785620).

Almost surely, 2^659498659 is an apocalyptic number.

659498659 is a deficient number, since it is larger than the sum of its proper divisors (3643821).

659498659 is a wasteful number, since it uses less digits than its factorization.

659498659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643820.

The product of its digits is 20995200, while the sum is 61.

The square root of 659498659 is about 25680.7059677105. The cubic root of 659498659 is about 870.4382602756.

It can be divided in two parts, 65 and 9498659, that added together give a square (9498724 = 3082²).

The spelling of 659498659 in words is "six hundred fifty-nine million, four hundred ninety-eight thousand, six hundred fifty-nine".