76969645 has 4 divisors (see below), whose sum is σ = 92363580. Its totient is φ = 61575712.

The previous prime is 76969643. The next prime is 76969663. The reversal of 76969645 is 54696967.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29387241 + 47582404 = 5421^2 + 6898^2 .

It is a cyclic number.

It is not a de Polignac number, because 76969645 - 2¹ = 76969643 is a prime.

It is a super-3 number, since 3×76969645³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76969592 and 76969601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76969643) 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, 7696960 + ... + 7696969.

It is an arithmetic number, because the mean of its divisors is an integer number (23090895).

Almost surely, 2^76969645 is an apocalyptic number.

It is an amenable number.

76969645 is a deficient number, since it is larger than the sum of its proper divisors (15393935).

76969645 is a wasteful number, since it uses less digits than its factorization.

76969645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15393934.

The product of its digits is 2449440, while the sum is 52.

The square root of 76969645 is about 8773.2345802446. The cubic root of 76969645 is about 425.3761744407.

The spelling of 76969645 in words is "seventy-six million, nine hundred sixty-nine thousand, six hundred forty-five".