659420747 has 4 divisors (see below), whose sum is σ = 680692416. Its totient is φ = 638149080.

The previous prime is 659420731. The next prime is 659420759. The reversal of 659420747 is 747024956.

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 659420747 - 2⁴ = 659420731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 659420698 and 659420707.

It is not an unprimeable number, because it can be changed into a prime (659420717) 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, 10635788 + ... + 10635849.

It is an arithmetic number, because the mean of its divisors is an integer number (170173104).

Almost surely, 2^659420747 is an apocalyptic number.

659420747 is a deficient number, since it is larger than the sum of its proper divisors (21271669).

659420747 is a wasteful number, since it uses less digits than its factorization.

659420747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21271668.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 659420747 is about 25679.1889864147. The cubic root of 659420747 is about 870.4039815824.

The spelling of 659420747 in words is "six hundred fifty-nine million, four hundred twenty thousand, seven hundred forty-seven".