75366761 has 2 divisors, whose sum is σ = 75366762. Its totient is φ = 75366760.

The previous prime is 75366719. The next prime is 75366821. The reversal of 75366761 is 16766357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74718736 + 648025 = 8644^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 75366761 - 2¹⁴ = 75350377 is a prime.

It is a super-2 number, since 2×75366761² = 11360297327262242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75366701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37683380 + 37683381.

It is an arithmetic number, because the mean of its divisors is an integer number (37683381).

Almost surely, 2^75366761 is an apocalyptic number.

It is an amenable number.

75366761 is a deficient number, since it is larger than the sum of its proper divisors (1).

75366761 is an equidigital number, since it uses as much as digits as its factorization.

75366761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 41.

The square root of 75366761 is about 8681.4031699950. The cubic root of 75366761 is about 422.4026333993.

The spelling of 75366761 in words is "seventy-five million, three hundred sixty-six thousand, seven hundred sixty-one".