75866977 has 4 divisors (see below), whose sum is σ = 77481216. Its totient is φ = 74252740.

The previous prime is 75866941. The next prime is 75866993. The reversal of 75866977 is 77966857.

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: 77966857 = 613 ⋅127189.

It is a cyclic number.

It is not a de Polignac number, because 75866977 - 2⁷ = 75866849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75866377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807049 + ... + 807142.

It is an arithmetic number, because the mean of its divisors is an integer number (19370304).

Almost surely, 2^75866977 is an apocalyptic number.

It is an amenable number.

75866977 is a deficient number, since it is larger than the sum of its proper divisors (1614239).

75866977 is a wasteful number, since it uses less digits than its factorization.

75866977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614238.

The product of its digits is 4445280, while the sum is 55.

The square root of 75866977 is about 8710.1651534285. The cubic root of 75866977 is about 423.3350816607.

The spelling of 75866977 in words is "seventy-five million, eight hundred sixty-six thousand, nine hundred seventy-seven".