75601861 has 2 divisors, whose sum is σ = 75601862. Its totient is φ = 75601860.

The previous prime is 75601853. The next prime is 75601871. The reversal of 75601861 is 16810657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54671236 + 20930625 = 7394^2 + 4575^2 .

It is an emirp because it is prime and its reverse (16810657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75601861 - 2³ = 75601853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75601871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37800930 + 37800931.

It is an arithmetic number, because the mean of its divisors is an integer number (37800931).

Almost surely, 2^75601861 is an apocalyptic number.

It is an amenable number.

75601861 is a deficient number, since it is larger than the sum of its proper divisors (1).

75601861 is an equidigital number, since it uses as much as digits as its factorization.

75601861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 75601861 is about 8694.9330647222. The cubic root of 75601861 is about 422.8413934782.

The spelling of 75601861 in words is "seventy-five million, six hundred one thousand, eight hundred sixty-one".