75763421 has 2 divisors, whose sum is σ = 75763422. Its totient is φ = 75763420.

The previous prime is 75763417. The next prime is 75763423. The reversal of 75763421 is 12436757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50623225 + 25140196 = 7115^2 + 5014^2 .

It is a cyclic number.

It is not a de Polignac number, because 75763421 - 2² = 75763417 is a prime.

Together with 75763423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75763423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37881710 + 37881711.

It is an arithmetic number, because the mean of its divisors is an integer number (37881711).

Almost surely, 2^75763421 is an apocalyptic number.

It is an amenable number.

75763421 is a deficient number, since it is larger than the sum of its proper divisors (1).

75763421 is an equidigital number, since it uses as much as digits as its factorization.

75763421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 35.

The square root of 75763421 is about 8704.2185749210. The cubic root of 75763421 is about 423.1423810031.

The spelling of 75763421 in words is "seventy-five million, seven hundred sixty-three thousand, four hundred twenty-one".