77047045 has 8 divisors (see below), whose sum is σ = 92551680. Its totient is φ = 61574160.

The previous prime is 77047039. The next prime is 77047049. The reversal of 77047045 is 54074077.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77047045 - 2¹¹ = 77044997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77047045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77047049) 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, 2221 + ... + 12610.

It is an arithmetic number, because the mean of its divisors is an integer number (11568960).

Almost surely, 2^77047045 is an apocalyptic number.

It is an amenable number.

77047045 is a deficient number, since it is larger than the sum of its proper divisors (15504635).

77047045 is a wasteful number, since it uses less digits than its factorization.

77047045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15875.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 77047045 is about 8777.6446157269. The cubic root of 77047045 is about 425.5187115236.

The spelling of 77047045 in words is "seventy-seven million, forty-seven thousand, forty-five".