75677891 has 4 divisors (see below), whose sum is σ = 75730272. Its totient is φ = 75625512.

The previous prime is 75677873. The next prime is 75677939. The reversal of 75677891 is 19877657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19877657 = 71 ⋅279967.

It is a cyclic number.

It is not a de Polignac number, because 75677891 - 2⁶ = 75677827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75677831) 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, 23960 + ... + 26933.

It is an arithmetic number, because the mean of its divisors is an integer number (18932568).

Almost surely, 2^75677891 is an apocalyptic number.

75677891 is a deficient number, since it is larger than the sum of its proper divisors (52381).

75677891 is a wasteful number, since it uses less digits than its factorization.

75677891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52380.

The product of its digits is 740880, while the sum is 50.

The square root of 75677891 is about 8699.3040526240. The cubic root of 75677891 is about 422.9830913140.

The spelling of 75677891 in words is "seventy-five million, six hundred seventy-seven thousand, eight hundred ninety-one".