509680067 has 4 divisors (see below), whose sum is σ = 548886240. Its totient is φ = 470473896.

The previous prime is 509680063. The next prime is 509680081. The reversal of 509680067 is 760086905.

It is a happy number.

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 509680067 - 2² = 509680063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509680063) 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, 19603067 + ... + 19603092.

It is an arithmetic number, because the mean of its divisors is an integer number (137221560).

Almost surely, 2^509680067 is an apocalyptic number.

509680067 is a deficient number, since it is larger than the sum of its proper divisors (39206173).

509680067 is a wasteful number, since it uses less digits than its factorization.

509680067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39206172.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 509680067 is about 22576.0950343499. The cubic root of 509680067 is about 798.7898719732.

The spelling of 509680067 in words is "five hundred nine million, six hundred eighty thousand, sixty-seven".