75148643 has 2 divisors, whose sum is σ = 75148644. Its totient is φ = 75148642.

The previous prime is 75148637. The next prime is 75148651. The reversal of 75148643 is 34684157.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75148643 - 2⁴ = 75148627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75148597 and 75148606.

It is not a weakly prime, because it can be changed into another prime (75148043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37574321 + 37574322.

It is an arithmetic number, because the mean of its divisors is an integer number (37574322).

Almost surely, 2^75148643 is an apocalyptic number.

75148643 is a deficient number, since it is larger than the sum of its proper divisors (1).

75148643 is an equidigital number, since it uses as much as digits as its factorization.

75148643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 75148643 is about 8668.8316975242. The cubic root of 75148643 is about 421.9947496034.

It can be divided in two parts, 751 and 48643, that added together give a palindrome (49394).

The spelling of 75148643 in words is "seventy-five million, one hundred forty-eight thousand, six hundred forty-three".