976609 has 4 divisors (see below), whose sum is σ = 979204. Its totient is φ = 974016.

The previous prime is 976607. The next prime is 976621. The reversal of 976609 is 906679.

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 409600 + 567009 = 640^2 + 753^2 .

It is a cyclic number.

It is not a de Polignac number, because 976609 - 2¹ = 976607 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (976601) 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, 612 + ... + 1525.

It is an arithmetic number, because the mean of its divisors is an integer number (244801).

2⁹⁷⁶⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

976609 is a deficient number, since it is larger than the sum of its proper divisors (2595).

976609 is a wasteful number, since it uses less digits than its factorization.

976609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 976609 is about 988.2352958683. The cubic root of 976609 is about 99.2141404249.

The spelling of 976609 in words is "nine hundred seventy-six thousand, six hundred nine".