75656645 has 8 divisors (see below), whose sum is σ = 91169280. Its totient is φ = 60271120.

The previous prime is 75656627. The next prime is 75656663. The reversal of 75656645 is 54665657.

It is an interprime number because it is at equal distance from previous prime (75656627) and next prime (75656663).

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

It is a de Polignac number, because none of the positive numbers 2^k-75656645 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 75656596 and 75656605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30461 + ... + 32850.

It is an arithmetic number, because the mean of its divisors is an integer number (11396160).

Almost surely, 2^75656645 is an apocalyptic number.

It is an amenable number.

75656645 is a deficient number, since it is larger than the sum of its proper divisors (15512635).

75656645 is a wasteful number, since it uses less digits than its factorization.

75656645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63555.

The product of its digits is 756000, while the sum is 44.

The square root of 75656645 is about 8698.0828347401. The cubic root of 75656645 is about 422.9435044997.

The spelling of 75656645 in words is "seventy-five million, six hundred fifty-six thousand, six hundred forty-five".