76726081 has 8 divisors (see below), whose sum is σ = 77877800. Its totient is φ = 75582720.

The previous prime is 76726051. The next prime is 76726087. The reversal of 76726081 is 18062767.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5475600 + 71250481 = 2340^2 + 8441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(76726081) divides (76726081-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 76726081 - 2¹⁹ = 76201793 is a prime.

It is a super-2 number, since 2×76726081² = 11773783011237122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76726081.

It is not an unprimeable number, because it can be changed into a prime (76726087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17785 + ... + 21673.

It is an arithmetic number, because the mean of its divisors is an integer number (9734725).

Almost surely, 2^76726081 is an apocalyptic number.

It is an amenable number.

76726081 is a deficient number, since it is larger than the sum of its proper divisors (1151719).

76726081 is a wasteful number, since it uses less digits than its factorization.

76726081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 76726081 is about 8759.3424981559. The cubic root of 76726081 is about 424.9270112258.

The spelling of 76726081 in words is "seventy-six million, seven hundred twenty-six thousand, eighty-one".