76989245 has 4 divisors (see below), whose sum is σ = 92387100. Its totient is φ = 61591392.

The previous prime is 76989217. The next prime is 76989247. The reversal of 76989245 is 54298967.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54298967 = 61 ⋅890147.

It can be written as a sum of positive squares in 2 ways, for example, as 29019769 + 47969476 = 5387^2 + 6926^2 .

It is a cyclic number.

It is not a de Polignac number, because 76989245 - 2¹⁶ = 76923709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76989193 and 76989202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76989247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7698920 + ... + 7698929.

It is an arithmetic number, because the mean of its divisors is an integer number (23096775).

Almost surely, 2^76989245 is an apocalyptic number.

It is an amenable number.

76989245 is a deficient number, since it is larger than the sum of its proper divisors (15397855).

76989245 is a wasteful number, since it uses less digits than its factorization.

76989245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15397854.

The product of its digits is 1088640, while the sum is 50.

The square root of 76989245 is about 8774.3515429917. The cubic root of 76989245 is about 425.4122781343.

The spelling of 76989245 in words is "seventy-six million, nine hundred eighty-nine thousand, two hundred forty-five".