76312209 has 8 divisors (see below), whose sum is σ = 103669632. Its totient is φ = 49914800.

The previous prime is 76312169. The next prime is 76312211. The reversal of 76312209 is 90221367.

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 76312209 - 2⁷ = 76312081 is a prime.

It is a super-3 number, since 3×76312209³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (76312279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239817 + ... + 240134.

It is an arithmetic number, because the mean of its divisors is an integer number (12958704).

Almost surely, 2^76312209 is an apocalyptic number.

It is an amenable number.

76312209 is a deficient number, since it is larger than the sum of its proper divisors (27357423).

76312209 is a wasteful number, since it uses less digits than its factorization.

76312209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480007.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 76312209 is about 8735.6859490254. The cubic root of 76312209 is about 424.1615932806.

The spelling of 76312209 in words is "seventy-six million, three hundred twelve thousand, two hundred nine".