75635641 has 2 divisors, whose sum is σ = 75635642. Its totient is φ = 75635640.

The previous prime is 75635633. The next prime is 75635657. The reversal of 75635641 is 14653657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73616400 + 2019241 = 8580^2 + 1421^2 .

It is a cyclic number.

It is not a de Polignac number, because 75635641 - 2³ = 75635633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75635641.

It is not a weakly prime, because it can be changed into another prime (75635621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37817820 + 37817821.

It is an arithmetic number, because the mean of its divisors is an integer number (37817821).

Almost surely, 2^75635641 is an apocalyptic number.

It is an amenable number.

75635641 is a deficient number, since it is larger than the sum of its proper divisors (1).

75635641 is an equidigital number, since it uses as much as digits as its factorization.

75635641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 75635641 is about 8696.8753584262. The cubic root of 75635641 is about 422.9043613084.

The spelling of 75635641 in words is "seventy-five million, six hundred thirty-five thousand, six hundred forty-one".