75061643 has 2 divisors, whose sum is σ = 75061644. Its totient is φ = 75061642.

The previous prime is 75061601. The next prime is 75061661. The reversal of 75061643 is 34616057.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75061643 - 2⁸ = 75061387 is a prime.

It is not a weakly prime, because it can be changed into another prime (75061843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37530821 + 37530822.

It is an arithmetic number, because the mean of its divisors is an integer number (37530822).

Almost surely, 2^75061643 is an apocalyptic number.

75061643 is a deficient number, since it is larger than the sum of its proper divisors (1).

75061643 is an equidigital number, since it uses as much as digits as its factorization.

75061643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 75061643 is about 8663.8122671258. The cubic root of 75061643 is about 421.8318381668.

The spelling of 75061643 in words is "seventy-five million, sixty-one thousand, six hundred forty-three".