75672209 has 16 divisors (see below), whose sum is σ = 80510976. Its totient is φ = 71014800.

The previous prime is 75672203. The next prime is 75672221. The reversal of 75672209 is 90227657.

It is not a de Polignac number, because 75672209 - 2¹² = 75668113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75672203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243164 + ... + 243474.

It is an arithmetic number, because the mean of its divisors is an integer number (5031936).

Almost surely, 2^75672209 is an apocalyptic number.

It is an amenable number.

75672209 is a deficient number, since it is larger than the sum of its proper divisors (4838767).

75672209 is a wasteful number, since it uses less digits than its factorization.

75672209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 75672209 is about 8698.9774686454. The cubic root of 75672209 is about 422.9725049986.

The spelling of 75672209 in words is "seventy-five million, six hundred seventy-two thousand, two hundred nine".