75189649 has 4 divisors (see below), whose sum is σ = 75892464. Its totient is φ = 74486836.

The previous prime is 75189641. The next prime is 75189679. The reversal of 75189649 is 94698157.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94698157 = 3061 ⋅30937.

It is a cyclic number.

It is not a de Polignac number, because 75189649 - 2³ = 75189641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75189641) 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, 351247 + ... + 351460.

It is an arithmetic number, because the mean of its divisors is an integer number (18973116).

Almost surely, 2^75189649 is an apocalyptic number.

It is an amenable number.

75189649 is a deficient number, since it is larger than the sum of its proper divisors (702815).

75189649 is a wasteful number, since it uses less digits than its factorization.

75189649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702814.

The product of its digits is 544320, while the sum is 49.

The square root of 75189649 is about 8671.1965148992. The cubic root of 75189649 is about 422.0714915977.

The spelling of 75189649 in words is "seventy-five million, one hundred eighty-nine thousand, six hundred forty-nine".