75641879 has 2 divisors, whose sum is σ = 75641880. Its totient is φ = 75641878.

The previous prime is 75641849. The next prime is 75641897. The reversal of 75641879 is 97814657.

Together with next prime (75641897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (97814657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75641879 - 2⁸ = 75641623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75641809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37820939 + 37820940.

It is an arithmetic number, because the mean of its divisors is an integer number (37820940).

Almost surely, 2^75641879 is an apocalyptic number.

75641879 is a deficient number, since it is larger than the sum of its proper divisors (1).

75641879 is an equidigital number, since it uses as much as digits as its factorization.

75641879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 47.

The square root of 75641879 is about 8697.2339855842. The cubic root of 75641879 is about 422.9159872423.

The spelling of 75641879 in words is "seventy-five million, six hundred forty-one thousand, eight hundred seventy-nine".