76645418 has 16 divisors (see below), whose sum is σ = 121897224. Its totient is φ = 36019200.

The previous prime is 76645417. The next prime is 76645427. The reversal of 76645418 is 81454667.

It can be written as a sum of positive squares in 4 ways, for example, as 55457809 + 21187609 = 7447^2 + 4603^2 .

It is not an unprimeable number, because it can be changed into a prime (76645417) 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, 39896 + ... + 41772.

Almost surely, 2^76645418 is an apocalyptic number.

76645418 is a deficient number, since it is larger than the sum of its proper divisors (45251806).

76645418 is a wasteful number, since it uses less digits than its factorization.

76645418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097.

The product of its digits is 161280, while the sum is 41.

The square root of 76645418 is about 8754.7368892503. The cubic root of 76645418 is about 424.7780488147.

Subtracting 76645418 from its reverse (81454667), we obtain a square (4809249 = 2193²).

The spelling of 76645418 in words is "seventy-six million, six hundred forty-five thousand, four hundred eighteen".