75216761 has 12 divisors (see below), whose sum is σ = 78290256. Its totient is φ = 72224040.

The previous prime is 75216751. The next prime is 75216787. The reversal of 75216761 is 16761257.

It is not a de Polignac number, because 75216761 - 2⁶ = 75216697 is a prime.

It is a super-2 number, since 2×75216761² = 11315122270662242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75216751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216590 + ... + 216936.

It is an arithmetic number, because the mean of its divisors is an integer number (6524188).

Almost surely, 2^75216761 is an apocalyptic number.

75216761 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

75216761 is a deficient number, since it is larger than the sum of its proper divisors (3073495).

75216761 is an equidigital number, since it uses as much as digits as its factorization.

75216761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 461 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 75216761 is about 8672.7597107265. The cubic root of 75216761 is about 422.1222158986.

The spelling of 75216761 in words is "seventy-five million, two hundred sixteen thousand, seven hundred sixty-one".