75649689 has 24 divisors (see below), whose sum is σ = 111837440. Its totient is φ = 49263552.

The previous prime is 75649663. The next prime is 75649723. The reversal of 75649689 is 98694657.

75649689 is a `hidden beast` number, since 75 + 6 + 496 + 89 = 666.

It is not a de Polignac number, because 75649689 - 2⁵ = 75649657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75649289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72717 + ... + 73749.

Almost surely, 2^75649689 is an apocalyptic number.

75649689 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

75649689 is a deficient number, since it is larger than the sum of its proper divisors (36187751).

75649689 is a wasteful number, since it uses less digits than its factorization.

75649689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221 (or 1218 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 75649689 is about 8697.6829673195. The cubic root of 75649689 is about 422.9305420552.

The spelling of 75649689 in words is "seventy-five million, six hundred forty-nine thousand, six hundred eighty-nine".