76140645 has 16 divisors (see below), whose sum is σ = 139228800. Its totient is φ = 34807104.

The previous prime is 76140641. The next prime is 76140703. The reversal of 76140645 is 54604167.

It is not a de Polignac number, because 76140645 - 2² = 76140641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76140641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362470 + ... + 362679.

It is an arithmetic number, because the mean of its divisors is an integer number (8701800).

Almost surely, 2^76140645 is an apocalyptic number.

It is an amenable number.

76140645 is a deficient number, since it is larger than the sum of its proper divisors (63088155).

76140645 is a wasteful number, since it uses less digits than its factorization.

76140645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725164.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 76140645 is about 8725.8607025324. The cubic root of 76140645 is about 423.8434901317.

The spelling of 76140645 in words is "seventy-six million, one hundred forty thousand, six hundred forty-five".