75347986 has 12 divisors (see below), whose sum is σ = 131474718. Its totient is φ = 32291952.

The previous prime is 75347963. The next prime is 75348001. The reversal of 75347986 is 68974357.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 22857961 = 7245^2 + 4781^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 384331 + ... + 384526.

Almost surely, 2^75347986 is an apocalyptic number.

75347986 is a deficient number, since it is larger than the sum of its proper divisors (56126732).

75347986 is a wasteful number, since it uses less digits than its factorization.

75347986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768873 (or 768866 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The square root of 75347986 is about 8680.3217682296. The cubic root of 75347986 is about 422.3675548582.

The spelling of 75347986 in words is "seventy-five million, three hundred forty-seven thousand, nine hundred eighty-six".