609977 has 8 divisors (see below), whose sum is σ = 659016. Its totient is φ = 562432.

The previous prime is 609929. The next prime is 609979. The reversal of 609977 is 779906.

It can be written as a sum of positive squares in 4 ways, for example, as 436921 + 173056 = 661^2 + 416^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 609977 - 2⁶ = 609913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 609977.

It is not an unprimeable number, because it can be changed into a prime (609979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563 + ... + 1239.

It is an arithmetic number, because the mean of its divisors is an integer number (82377).

2⁶⁰⁹⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

609977 is a deficient number, since it is larger than the sum of its proper divisors (49039).

609977 is a wasteful number, since it uses less digits than its factorization.

609977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 609977 is about 781.0102432107. The cubic root of 609977 is about 84.8081949627.

The spelling of 609977 in words is "six hundred nine thousand, nine hundred seventy-seven".