75864646 has 16 divisors (see below), whose sum is σ = 133692048. Its totient is φ = 31831200.

The previous prime is 75864643. The next prime is 75864647. The reversal of 75864646 is 64646857.

It is a junction number, because it is equal to n+sod(n) for n = 75864596 and 75864605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75864641) 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 7 ways as a sum of consecutive naturals, for example, 132345 + ... + 132916.

It is an arithmetic number, because the mean of its divisors is an integer number (8355753).

Almost surely, 2^75864646 is an apocalyptic number.

75864646 is a deficient number, since it is larger than the sum of its proper divisors (57827402).

75864646 is a wasteful number, since it uses less digits than its factorization.

75864646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265287.

The product of its digits is 967680, while the sum is 46.

The square root of 75864646 is about 8710.0313432272. The cubic root of 75864646 is about 423.3307459835.

The spelling of 75864646 in words is "seventy-five million, eight hundred sixty-four thousand, six hundred forty-six".