76217145 has 16 divisors (see below), whose sum is σ = 122910720. Its totient is φ = 40328064.

The previous prime is 76217143. The next prime is 76217149. The reversal of 76217145 is 54171267.

It is not a de Polignac number, because 76217145 - 2¹ = 76217143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76217143) 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, 18100 + ... + 21909.

It is an arithmetic number, because the mean of its divisors is an integer number (7681920).

Almost surely, 2^76217145 is an apocalyptic number.

It is an amenable number.

76217145 is a deficient number, since it is larger than the sum of its proper divisors (46693575).

76217145 is a wasteful number, since it uses less digits than its factorization.

76217145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40144.

The product of its digits is 11760, while the sum is 33.

The square root of 76217145 is about 8730.2431237624. The cubic root of 76217145 is about 423.9853905759.

The spelling of 76217145 in words is "seventy-six million, two hundred seventeen thousand, one hundred forty-five".