659493077 has 4 divisors (see below), whose sum is σ = 675578316. Its totient is φ = 643407840.

The previous prime is 659493073. The next prime is 659493083. The reversal of 659493077 is 770394956.

659493077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 114083761 + 545409316 = 10681^2 + 23354^2 .

It is a cyclic number.

It is not a de Polignac number, because 659493077 - 2² = 659493073 is a prime.

It is a super-2 number, since 2×659493077² = 869862237221855858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659493071) 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, 8042558 + ... + 8042639.

It is an arithmetic number, because the mean of its divisors is an integer number (168894579).

Almost surely, 2^659493077 is an apocalyptic number.

It is an amenable number.

659493077 is a deficient number, since it is larger than the sum of its proper divisors (16085239).

659493077 is a wasteful number, since it uses less digits than its factorization.

659493077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16085238.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The square root of 659493077 is about 25680.5972866676. The cubic root of 659493077 is about 870.4358044707.

The spelling of 659493077 in words is "six hundred fifty-nine million, four hundred ninety-three thousand, seventy-seven".